JavaScript - Form Validation

<form id="f1" name="form1" onsubmit="validate_form(this); return false;" action="register" method="post">
        <table cellspacing="5" style="border: 2px solid black;">
            <tr>
                <td valign="top">
                    <table cellspacing="5">
                        <tr>
                            <td>*First name</td>
                            <td align="right"><span id="valid_one"></span></td>

                            <td><input type="text" style="width: 320px;" id="fn" name="fn" onBlur="validate_one();"></td>
                        </tr>
                        <tr>
                            <td align="left">*Last name</td>
                            <td align="right"><span id="valid_two"></span></td>

                            <td><input type="text" style="width: 320px;" id="ln" name="ln" onBlur="validate_two();"></td>
                        </tr>
                        <tr>
                            <td align="left">*Email address</td>
                            <td align="right"><span id="result"></span></td>

                            <td><input type="text" style="width: 320px;" id="mailfield" name="email" onBlur="startRequest();"></td>
                        </tr>
                        <tr>
                            <td align="left">*Phone number</td>
                            <td align="right"><span id="valid_three"></span></td>

                            <td><input type="text" style="width: 320px;" id="pn" name="pn" onBlur="validate_three();"></td>
                        </tr>
                        <tr>
                            <td align="left">*City/Town</td>
                            <td align="right"><span id="valid_four"></span></td>

                            <td><input type="text" style="width: 320px;" id="c" name="c" onBlur="validate_four();"></td>
                        </tr>
                        <tr>
                            <td></td>
                            <td></td>
                            <td>
                                <select name="s">
                                    <option value="AL">Alabama
                                    <option value="AK">Alaska
                                    <option value="AZ">Arizona
                                    <option value="AR">Arkansas
                                    <option value="CA">California
                                    <option value="CO">Colorado
                                    <option value="CT">Connecticut
                                    <option value="DE">Delaware
                                    <option value="FL">Florida
                                    <option value="GA">Georgia
                                    <option value="HI">Hawaii
                                    <option value="ID">Idaho
                                    <option value="IL">Illinois
                                    <option value="IN">Indiana
                                    <option value="IA">Iowa
                                    <option value="KS">Kansas
                                    <option value="KY">Kentucky
                                    <option value="LA">Louisiana
                                    <option value="ME">Maine
                                    <option value="MD">Maryland
                                    <option value="MA">Massachusetts
                                    <option value="MI">Michigan
                                    <option value="MN">Minnesota
                                    <option value="MS">Mississippi
                                    <option value="MO">Missouri
                                    <option value="MT">Montana
                                    <option value="NE">Nebraska
                                    <option value="NV">Nevada
                                    <option value="NH">New Hampshire
                                    <option value="NJ">New Jersey
                                    <option value="NM">New Mexico
                                    <option value="NY">New York
                                    <option value="MC">North Carolina
                                    <option value="ND">North Dakota
                                    <option value="OH">Ohio
                                    <option value="OK">Oklahoma
                                    <option value="OR">Oregon
                                    <option value="PA">Pennsylvania
                                    <option value="RI">Rhode Island
                                    <option value="SC">South Carolina
                                    <option value="SD">South Dakota
                                    <option value="TN">Tennessee
                                    <option value="TX">Texas
                                    <option value="UT">Utah
                                    <option value="VT">Vermont
                                    <option value="VA">Virginia
                                    <option value="WA">Washington
                                    <option value="WV">West Virginia
                                    <option value="WI">Wisconsin
                                    <option value="WY">Wyoming
                                </select>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <br>
                            </td>
                        </tr>
                        <tr>
                            <td></td>
                            <td></td>
                            <td><span id="error"></span></td>
                        </tr>
                        <tr>
                            <td valign="top">*Anti-Spam Verification</td>
                            <td></td>
                            <td id="reCaptcha"></td>
                        </tr>
                    </table>
                </td>
                <td valign="top">
                    <table cellspacing="5">
                        <tr>
                            <td align="left">*Affiliation</td>
                            <td align="right"><span id="valid_five"></span></td>

                            <td><input type="text" style="width: 320px;" id="affl" name="affl" onBlur="validate_five();"></td>
                        </tr>
                        <tr>
                            <td align="left">*Research Area:</td>
                            <td align="right"><span id="valid_six"></span></td>

                            <td><input type="text" style="width: 320px;" id="ra" name="ra" onBlur="validate_six();"></td>
                        </tr>
                        <tr>
                            <td valign="top" align="left">*Research Overview</td>
                            <td align="right"><span id="valid_seven"></span></td>

                            <td><textarea cols="38" rows="6" id="ro" name="ro" onKeyDown="limitText(this.form.ro,this.form.countdown,500)" onKeyUp="limitText(this.form.ro,this.form.countdown,500)" onBlur="validate_seven();"></textarea></td>
                        </tr>
                        <tr>
                            <td></td>
                            <td></td>
                            <td><font size="1">You have <input readonly type="text" name="countdown" size="1" value="500"> characters remaining.</font></td>
                        </tr>
                        <tr>
                            <td align="left">*Talk Availability</td>
                            <td></td>
                            <td>
                                <input type="radio" name="ta" value="In person">In person
                                <input type="radio" name="ta" value="Online">Online
                                <input type="radio" name="ta" value="Both" checked>Both
                            </td>
                        </tr>
                        <tr>
                            <td align="left" valign="top">Links</td>
                            <td></td>
                            <td>
                                <table id="linkTable" border="0">
                                    <td><input type="text" style="width: 320px;" name="link"></td>
                                    <td><div id="result"></div></td>
                                </table>
                            </td>
                            <td align="left" valign="top"><input type="button" value="Add Link" onclick="addLink('linkTable')"></td>
                        </tr>
                        <tr>
                            <td></td>
                            <td><span style="color: red;"></span></td>
                        </tr>
                    </table>
                </td>
            </tr>
        </table>
        <br />
        <input type="submit" id="submit" name="submit" value="Submit Form">
    </form>

/* 
 * script.js - ajax and table functions
 */

var xmlHttp; // global instance of XMLHttpRequest
var xmlHttp2; // second for captcha functions

var validAjax = new Boolean();
var validCaptcha = new Boolean();

var valid_one = new Boolean();
var valid_two = new Boolean();
var valid_three = new Boolean();
var valid_four = new Boolean();
var valid_five = new Boolean();
var valid_six = new Boolean();
var valid_seven = new Boolean();

function init() {
    showRecaptcha('reCaptcha');

    // Separate booleans for AJAX funcs
    validAjax = false;
    validCaptcha = false;

    // Booleanse for fields that don't require servlet validation
    valid_one = false;
    valid_two = false;
    valid_three = false;
    valid_four = false;
    valid_five = false;
    valid_six = false;
    valid_seven = false;
}

function showRecaptcha(element) {
    Recaptcha.create("6Le1a8ESAAAAAGtxX0miZ2bMg0Wymltnth7IG-Mj", element, {theme: "red", callback: Recaptcha.focus_response_field});
}

function validate_form() {
    if (valid_one && valid_two && valid_three && valid_four && validEmail) {
        startCaptchaRequest();

        if (validCaptcha) {
            return true;
        }
    }
    else {
        alert("Submission contains errors. Please fill out all required fields before submitting.");
        return false;
    }
}

function validate_one() {
    if (document.getElementById("fn").value == 0) {
        valid_one = false;
        document.getElementById("valid_one").innerHTML = "No";
    }
    else {
        valid_one = true;
        document.getElementById("valid_one").innerHTML = "";
    }
}

function validate_two() {
    if (document.getElementById("ln").value == 0) {
        valid_two = false;
        document.getElementById("valid_two").innerHTML = "No";
    }
    else {
        valid_two = true;
        document.getElementById("valid_two").innerHTML = "";
    }
}

function validate_three() {
    if (document.getElementById("pn").value == 0) {
        valid_three = false;
        document.getElementById("valid_three").innerHTML = "No";
    }
    else {
        valid_three = true;
        document.getElementById("valid_three").innerHTML = "";
    }
}

function validate_four() {
    if (document.getElementById("c").value == 0) {
        valid_four = false;
        document.getElementById("valid_four").innerHTML = "No";
    }
    else {
        valid_four = true;
        document.getElementById("valid_four").innerHTML = "";
    }
}

function validate_five() {
    if (document.getElementById("affl").value == 0) {
        valid_five = false;
        document.getElementById("valid_five").innerHTML = "No";
    }
    else {
        valid_five = true;
        document.getElementById("valid_five").innerHTML = "";
    }
}
//
//function validate_six() {
//    if (document.getElementById("ra").value == 0) {
//        valid_six = false;
//        document.getElementById("valid_six").innerHTML = "No";
//    }
//    else {
//        valid_six = true;
//        document.getElementById("valid_six").innerHTML = "";
//    }
//}
//
//function validate_seven() {
//    if (document.getElementById("ro").value == 0) {
//        valid_seven = false;
//        document.getElementById("valid_seven").innerHTML = "No";
//    }
//    else {
//        valid_seven = true;
//        document.getElementById("valid_seven").innerHTML = "";
//    }
//}

function addLink(tableID) {
    var table = document.getElementById(tableID);

    var rowCount = table.rows.length;
    var row = table.insertRow(rowCount);

    var cell = row.insertCell(0);
    var element1 = document.createElement("input");

    element1.type = "text";
    element1.name = "link" + rowCount;
    element1.style.width = "320px";

    cell.appendChild(element1);
}

function limitText(limitField, limitCount, limitNum) {
    if (limitField.value.length > limitNum) {
        limitField.value = limitField.value.substring(0, limitNum);
    }
    else {
        limitCount.value = limitNum - limitField.value.length;
    }
}

function createXmlHttpRequest() {
    if(window.ActiveXObject) {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if(window.XMLHttpRequest) {
        xmlHttp=new XMLHttpRequest();
    }
}

function startRequest() {
    createXmlHttpRequest();
    
    var param1 = document.getElementById('mailfield').value;

    if (param1 == "") {
        validEmail = false;
        document.getElementById("result").innerHTML = "Blank";
    }
    else {
        xmlHttp.open("GET", "http://localhost:1979/PolarSpeakers/servlet/mailCheck.do?e=" + param1, true)
        xmlHttp.onreadystatechange = handleStateChange;
        xmlHttp.send(null);
    }
}

function handleStateChange() {
    if(xmlHttp.readyState==4) {
        if(xmlHttp.status==200) {
            var message =
                xmlHttp.responseXML
                .getElementsByTagName("valid")[0]
                .childNodes[0].nodeValue;
            
            if (message == "Unregistered") {
                validEmail = true;
                document.getElementById("result").style.color = "green";
            }
            else {
                validEmail = false;
                document.getElementById("result").style.color = "red";
            }

            document.getElementById("result").innerHTML = message;
        }
        else {
            alert("Error checking e-mail address - " + xmlHttp.status +
                " : " + xmlHttp.statusText);
        }
    }
}
function createCaptchaRequest() {
    if(window.ActiveXObject) {
        xmlHttp2=new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if(window.XMLHttpRequest) {
        xmlHttp2=new XMLHttpRequest();
    }
}

function startCaptchaRequest() {
    alert('made it to captcha requeswt');
    createCaptchaRequest();

    var param1 = Recaptcha.get_challenge();
    var param2 = Recaptcha.get_response();

    xmlHttp2.open("POST", "http://localhost:1979/PolarSpeakers/servlet/captchaCheck.do?c=" + param1 + "&r=" + param2, true)
    xmlHttp2.onreadystatechange = handleStateChangeCaptcha;
    xmlHttp2.send(null);
}

function handleStateChangeCaptcha() {
    if(xmlHttp2.readyState==4) {
        if(xmlHttp2.status==200) {
            var message =
                xmlHttp2.responseXML
                .getElementsByTagName("result")[0]
                .childNodes[0].nodeValue;

            if (message == "Valid") {
                alert("captcha valid");
                validCaptcha = true;
            }
            else {
                document.getElementById("error").innerHTML = message;
                validCaptcha = false;
            }
        }
        else {
            alert("Error checking captcha validity - " + xmlHttp2.status +
                " : " + xmlHttp2.statusText);
        }
    }
}

    <html>
    <head>
    <script type="text/javascript" src="email_helper/jscripts/tiny_mce/tiny_mce.js"></script>
    <script type="text/javascript">
        tinyMCE.init({
            // General options
            mode : "textareas",
            theme : "simple"
        });
    </script>
    <script language="javascript">
     
    function MM_openBrWindow(theURL,winName,features) {
        window.open(theURL,winName,features);
    }
    function err_check(){
        var email = document.getElementById('to_email').value;
        if(email.length==0){
            alert('Please Enter Email Address');
            return false;
        }
        var AtPos = email.indexOf("@")
        var StopPos = email.lastIndexOf(".")
        if (AtPos == -1 || StopPos == -1) {
            alert("Please Enter Valid Email Address");
            document.getElementById('email').focus();
            return false;
        }
        email = document.getElementById('cc_email').value;
        if(email.length != 0){
            var AtPos = email.indexOf("@")
            var StopPos = email.lastIndexOf(".")
            if (AtPos == -1 || StopPos == -1) {
                alert("Please Enter Valid Email Address");
                document.getElementById('email').focus();
                return false;
            }
        }
        var answer = confirm ("Send E-Mail?");
        if (!answer){
            return false;
        }
    }
    </script>
    <!-- /TinyMCE -->
     
     
    <style type="text/css">
    body, table, td, th{
        background-color:#CCCCCC;
        font-family: Arial;
        font-size:14px;
    }
    .que{
        font-weight:bold;
    }
    </style>
    </head>
    <body>
    <form method="post" enctype="multipart/form-data">
    <?php
    include 'library/database.php';
    include 'library/opendb.php';
    $query = mysql_query("SELECT email,contact,mobile FROM users WHERE user_id='$uid'") or die(mysql_error());
    $row = mysql_fetch_row($query);
    $from_email = $row[0];
    $from_person = $row[1];
    $from_mobile = $row[2];
    $query = mysql_query("SELECT customer_id FROM campaign_summary WHERE camp_id='$camp_id'") or die(mysql_error());
    $row = mysql_fetch_row($query);
    $cusid = $row[0];
    $query = mysql_query("SELECT email FROM client_info WHERE comp_id='$cusid'") or die(mysql_error());
    $row = mysql_fetch_row($query);
    $toer = $row[0];
    include 'library/closedb.php';
    ?>
    <table width="100%" border="0">
    <tr><td rowspan="4"><input type="submit" name="send_email" id="send_email" style="height:50px; width:100px;" value="SEND" onClick="return err_check();" /></td><td><span class="que">From : </span></td><td colspan="3"><?php echo $from_email; ?><input type="hidden" name="from_mail" id="from_mail" /><input type="hidden" name="camp_id" id="camp_id" value="<?php echo $camp_id;?>"/></td></tr>
    <tr><td><span class="que">To : </span></td><td colspan="3"><input name="to_email" id="to_email" style="width:250px;" value="<?php echo $toer;?>"/></td></tr>
    <tr><td><span class="que">CC : </span></td><td colspan="3"><input name="cc_email" id="cc_email" style="width:250px;"/></td></tr>
    <tr><td><span class="que">Subject : </span></td><td colspan="3"><input style="width:300px;" name="subject" id="subject" /></td></tr>
    <tr><td rowspan="1" colspan="2">&nbsp;</td><td><input type="checkbox" name="ori_pdf" id="ori_pdf" checked /> PDF Quotation</td><td>&nbsp;</td><td>&nbsp;</td></tr><tr><td colspan="2"><span class="que">Credit Application</span></td><td><input type="checkbox" name="corporate" id="corporate"/>Corporate</td><td><input type="checkbox" name="individual" id="individual" />Individual</td><td><input type="checkbox" name="cash" id="cash" />Cash Account</td>
    </tr>
    <tr>
    <td colspan="2" rowspan="3"></td><td><input type="checkbox" name="tabloid" id="tabloid" />Tabloid Example</td>
    <td><input type="checkbox" name="broadsheet" id="broadsheet" />Broadsheet Example</td></tr>
    <tr><td><input type="checkbox" name="colmt" id="colmt" />Column Sizes Tabloid</td>
     
    <td><input type="checkbox" name="colmb" id="colmb" />Column Sizes Broadsheet</td></tr>
    <tr><td><input type="checkbox" name="maps" id="maps" />Maps / Distribution</td><td colspan="2" align="right">External Attachments&nbsp;&nbsp;<input id="upload_file" name="upload_file" type="file"/> </td></tr>
     
    <tr><td colspan="2"><span class="que">Message :</span></td><td colspan="3">
        <textarea id="elm1" name="elm1" rows="15" cols="80" style="width: 100%">
        <?php
         echo "<br><br><br>" . $from_person . "<br>" . $from_mobile; 
          ?>
        </textarea>
    </td></tr>
    </table>
    </form>
    </body>
    </html>

....
<script type="text/javascript">
	window.onload = function() {
		document.forms[0].username.focus();
	}
	function validate(form)
	{
		var form = document.getElementById("reg");
		var e = document.getElementById("error");
		e.style.background = "red";
		
		for(var i = 0; i < form.elements.length; i++)
		{
			var el = form.elements[i];
			if(el.type == "text" || el.type == "password")
			{
				if(el.value == "")
				{
					e.innerHTML = "Please fill in all fields!";
					el.style.border = "1px solid red";
					el.focus();
					return false;
				} else {
					el.style.border = "1px solid green";
					return false;
				}
			}
		}
		var un = form.username;
		un.value = un.value.replace(/^\s+|\s+$/g,"");
		if((un.value.length < 3)|| (/[^a-z0-9\_]/gi.test(un.value)))
		{
			e.innerHTML = "Only letters,numbers and the underscore are allowed (no spaces) - 3-16 characters";
			un.focus();
			return false;
		}
		var pw = form.password;
		pw.value = pw.value.replace(/^\s+|\s+$/g,"");
		if((pw.value.length < 3) || (/[^a-z0-9]/gi.test(pw.value)))
		{
			e.innerHTML = "Only letters and numbers are allowed (no spaces) - 3-16 characters";
			pw.focus();
			return false;
		}
		e.innerHTML = "You filled in all the fields, well done!";
		e.style.background = "green";
		return false;
	}
</script>
</head>

<body>
<div id="wrapper">
	<div id="header">
    	<h1>My Cool Website</h1>
    </div>
    <div id="content">
		<div class="padding">
       	  <h2>Registration</h2>
            <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Duis ligula lorem, consequat eget, tristique nec, auctor quis, purus. Vivamus ut sem. Fusce aliquam nunc vitae purus. Aenean viverra malesuada libero. Fusce ac quam. Donec neque. Nunc venenatis enim nec quam. Cras faucibus, justo vel accumsan aliquam, tellus dui fringilla quam, in condimentum augue lorem non tellus. Pellentesque id arcu non sem placerat iaculis. Curabitur posuere, pede vitae lacinia accumsan, enim nibh elementum orci, ut volutpat eros sapien nec sapien. Suspendisse neque arcu, ultrices commodo, pellentesque sit amet, ultricies ut, ipsum. Mauris et eros eget erat dapibus mollis. Mauris laoreet posuere odio. Nam ipsum ligula, ullamcorper eu, fringilla at, lacinia ut, augue. Nullam nunc.</p>
<form id="reg" action="#" method="post" onsubmit="return validate(this)">
	    <div id="error"></div>
		<div><label for="username">Username</label></div>
    			<div><input type="text" name="username" id="username" size="30" maxlength="16" /></div>
		<div><label for="password">Password</label></div>
    			<div><input type="password" name="password" id="password" size="30" maxlength="16" /></div>
        <div><label for="c_password">Confirm Password</label></div>
                <div><input type="password" name="c_password" id="c_password" size="30" maxlength="16" /></div>
        <div><label for="email">Email address</label></div>
                <div><input type="text" name="email" id="email" size="30" maxlength="200" /></div>
        <div><label for="c_email">Confirm Email address</label></div>
                <div><input type="text" name="c_email" id="c_email" size="30" maxlength="200" /></div>
        <div><label for="firstname">First name</label></div>
                <div><input type="text" name="firstname" id="firstname" size="30" maxlength="100" /></div>
        <div><label for="surname">Surname</label></div>
                <div><input type="text" name="surname" id="surname" size="30" maxlength="100" /></div>
        <div><label for="gender">Gender</label></div>
                <div>
                    <div><input type="radio" name="gender" id="gender" value="m" checked="checked" />Male</div>
                    <div><input type="radio" name="gender" value="f" />Female</div>
                </div>
                <div><input type="submit" value="Register" name="submit" /></div>
          </form>
		</div>
    </div>
    <div id="footer">
    	<p>Copyright &copy; 2009 My Cool Website</p>
    </div>
</div>
</body>
</html>

$(function validateForm(){
		
    //original field values
    var field_values = {
            //id  :  value
            'name'  :  'your name',
            'email'  :  'email',
			'phone'  :  '(555) 123-4567',
			'other'  :  'other',
			'detail'  :  'project overview'
    };

    //inputfocus
    $('input#name').inputfocus({ value: field_values['name'] });
    $('input#email').inputfocus({ value: field_values['email'] });
    $('input#phone').inputfocus({ value: field_values['phone'] });
	$('input#other').inputfocus({ value: field_values['other'] });
	$('input#detail').inputfocus({ value: field_values['detail'] });

    //reset progress bar
    $('#progress').css('width','0');
    $('#progress_text').html('0% Complete');

    //first_step
    $('form').submit(function(){  });
    $('#submit_first').click(function(){
        //remove classes
        $('#first_step input').removeClass('error').removeClass('valid');

        //ckeck if inputs aren't empty
        var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;  
        var fields1 = $('#first_step input[type=text]');
        var error = 0;
        fields1.each(function(){
            var value = $(this).val();
            if( value.length<5 || value==field_values[$(this).attr('id')] || ( $(this).attr('id')=='email' && !emailPattern.test(value) ) ) {
                $(this).addClass('error');
                $(this).effect("shake", { times:3 }, 50);
                
                error++;
            } else {
                $(this).addClass('valid');
            }
        });        
        
        if(error <= 0) {   
                //update progress bar
                $('#progress_text').html('25% Complete');
                $('#progress').css('width','85px');
                
                //slide steps
                $('#first_step').slideUp();
                $('#second_step').slideDown();                 
        } else 
			return false;
    });

	$('#back_second').click(function(){

                //update progress bar
                $('#progress_text').html('0% Complete');
                $('#progress').css('width','0px');
                
                //slide steps
                $('#second_step').slideUp();
                $('#first_step').slideDown();     

    });

    $('#submit_second').click(function(){
        //remove classes
        $('#second_step input').removeClass('error').removeClass('valid');
 
        var fields2 = $('#second_step input[textarea]');
        var error = 0;
        fields2.each(function(){
			var value = $(this).val();
			
            if( value.length<5 || value==field_values[$(this).attr('id')] ) {
                $(this).addClass('error');
                $(this).effect("shake", { times:3 }, 50);
                
                error++;
            } else {
                $(this).addClass('valid');
            }	
		});	
		
        if(error <= 0) { 
                //update progress bar
                $('#progress_text').html('50% Complete');
                $('#progress').css('width','170px');
                
                //slide steps
                $('#second_step').slideUp();
                $('#third_step').slideDown();     
        } else 
			return false;

    });

	$('#back_third').click(function(){

                //update progress bar
                $('#progress_text').html('25% Complete');
                $('#progress').css('width','85px');
                
                //slide steps
                $('#third_step').slideUp();
                $('#second_step').slideDown();     

    });

    $('#submit_third').click(function(){
        //update progress bar
        $('#progress_text').html('75% Complete');
        $('#progress').css('width','255px');

        //prepare the fourth step
		var fields3 = new Array(
			$('#time').val(),  
			$('#budget').val()             
        );
		var fields2half = new Array(
			$('#detail').val()
		);
		var fields2 = new Array(
            $('#other').val(),   
			$('#pages').val()		
		);	

		var fields1 = new Array(
            $('#name').val(),
            $('#email').val(),
            $('#phone').val(),
            $('#contact').val(),
            $('#url').val()
		);
        var tr = $('#fourth_step tr');
        tr.each(function(){
            //alert( fields[$(this).index()] )
            $(this).children('.1 td:nth-child(2)').html(fields1[$(this).index()]);
			$(this).children('.2 td:nth-child(2)').html(fields2[$(this).index()]);
			$(this).children('.2half td:nth-child(2)').html(fields2half[$(this).index()]);
			$(this).children('.3 td:nth-child(2)').html(fields3[$(this).index()]);
        });
                
        //slide steps
        $('#third_step').slideUp();
        $('#fourth_step').slideDown();            
    });

	$('#back_fourth').click(function(){

                //update progress bar
                $('#progress_text').html('50% Complete');
                $('#progress').css('width','170px');
                
                //slide steps
                $('#fourth_step').slideUp();
                $('#third_step').slideDown();     

    });

    $('#submit_fourth').click(function(){
        //send information to server

		        //update progress bar
                $('#progress_text').html('100% Complete');
                $('#progress').css('width','339px');
                
                //slide steps
                $('#fifth_step').slideUp();
                $('#fourth_step').slideDown(); 
				
		if(error <= 0) {        	
        	return true
    	}
    	else{
    		return false
    	}
				  
    });

});