JavaScript - Change 1 Selected Item From Dropdownbox <select...>

<INPUT TYPE="HIDDEN" NAME="REFERRER" VALUE="http://men.com/acatalog/">

<INPUT TYPE="HIDDEN" NAME="REFERRER" VALUE="http://kids.com/acatalog/">

<form name="simplesearch" method="get" action="" onsubmit="ssite=document.getElementById('sitelist');this.action=ssite.options[ssite.selectedIndex].value;return true;">			
 		<input type="hidden" name="page" value="search" />
        <input type="hidden" name="PR" value="-1" />
        <input type="hidden" name="TB" value="A" />
        <input type="hidden" name="NOLOGIN" value="1" /><input align="top" class="main_search_box" name="SS" type="text" value="search for ..." onfocus="this.value='';">
Search within: 
<select id="sitelist">
<option value="">Select Catagory</option>
<option value="http://kids.com/cgi-bin/ss000001.pl">kids</option>
<option value="http://men.com/cgi-bin/ss000001.pl">men</option>
<option value="http://women.com/cgi-bin/ss000001.pl">women</option>
</select><input type="submit" class="button" name="ACTION" value="Go!">
</form>

function MoveSelected(from, to) {
		var lstFrom = $(from);
		var lstTo = $(to);

		for (var i = 0; i<lstFrom.length;i++) {
			if ( lstFrom[i].selected ) {
				var elOptNew = document.createElement('option');
		    	elOptNew.text = lstFrom[i].text;
    			elOptNew.value = lstFrom[i].value;
			    try {
					lstTo.add(elOptNew, null); // standards compliant; doesn't work in IE
			    } catch(ex) {
					lstTo.add(elOptNew); // IE only
			    }
			}
		}
		for (var i = lstFrom.length-1; i>=0;i--) {
			if ( lstFrom[i].selected ) {
				lstFrom.options[i] = null;
			}										
		}					
	}

<td width="10%" valign="center">
	<a href="javascript: MoveSelected('lstAvailProd','lstSelectProd');"><IMG SRC="buttons/right_arrow.gif" style="padding-bottom: 2px;" /></a><br /><br />
	<a href="javascript: MoveSelected('lstSelectProd','lstAvailProd');"><IMG SRC="buttons/left_arrow.gif" /></a>
</td>

<select name="lstAvailProd" id="lstAvailProd" multiple="true" size="8" style="width: 250px;">
	<option value="-1">{All Products}</option>
	<option value="1">Product 1</option>
	<option value="2">Product 2</option>
	<option value="3">Product 3</option>
	<option value="4">Product 4</option>
	<option value="5">Product 5</option>
</select>

<select name="lstSelectProd" id="lstSelectProd" multiple="true" size="8" style="width: 250px;">
</select>

function createOption(OptionText, OptionValue){
var temp = document.captcha_form("option");
temp.innerHTML = OptionText;
temp.value = OptionValue;
return temp;
}

function valChange(){
    var firstList = document.getElementById("emailaddress");
    var secondList = document.getElementById("subject");
    while(secondList.hasChildNodes())
        secondList.removeChild(secondList.childNodes[0]);
    switch(firstList.value){
        case "1":{
             secondList.appendChild(createOption("Report Site Browsing Issue", Report Site Browsing Issues));
             secondList.appendChild(createOption("Report Page Errors", Report Page Errors));
             secondList.appendChild(createOption("Other", Other));
             break;
        }
        case "2":{
             secondList.appendChild(createOption("Report Unauthorized Game", Report Unauthorized Game));
             secondList.appendChild(createOption("Report Spam", Report Spam));
             secondList.appendChild(createOption("Report Harassment", Report Harassment));
			 secondList.appendChild(createOption("Report Illegal Activities", Report Illegal Activities));
			 secondList.appendChild(createOption("Request Account Removal", Request Account Removal));
             break;
        }
// ....
        default:{
             secondList.appendChild(createOption("Please select from the first list", ""));
             break;
        }
    }
}
 
window.onload = valChange;

<div class="mailto_form">
<form method="POST" id="captcha_form" name="captcha_form" action="../includes/mailform.php">
<div style="padding-bottom: 1em;">Choose Recipient: <select name="emailaddress" id="emailaddress" onchange="valChange();">
	<option value=""></option>
	<option value="1">Webmaster</option>
		<option value="2">Admin</option>
		</select>
  </div>
	

<div style="padding-bottom: 1em;">Subject: <br /><select name="subject" id="subject">
  </div>
  
  	<div style="padding-bottom: 1em;">From: <br /><input type="text" name="email" id="email" value="">
	</div>
  
		<div style="padding-bottom: 1em;">Enter the text contained in the image into the text box:
					<br /><img src="../includes/captcha.php" />
					<br /><input type="text" name="userpass" value="">
	</div>
	<div style="padding-bottom: 1em;">Message:
					<br /><textarea name="message" id="message" rows="10" cols="60"><?php echo "</tex" . "tarea>"; ?>				
	</div>
	
	<div style="padding-bottom: 1em;"><input name="submit" type="submit" value="Submit">
	</div>
</form>


</div>

<script type = "text/javascript">
function showDetails(which) {
var d = document.getElementById("classDescription");
var s = which.value;
if (s == "Enchantress") {d.innerHTML = "<b>Enchantress</b><br />This character is a magic user. You are weak with attacks, but powerful with magic."}
if (s == "Knight") {d.innerHTML = "<b>Knight</b><br />This character is a physical user. You are powerful with attacks, but weak against magic."}
if (s == "Archer") {d.innerHTML = "<b>Archer</b><br />This character is a unique user. You can attack twice, but can't equip shields."}
if (s == "Thief") {d.innerHTML = "<b>Thief</b><br />This character lurks in the shadows. He is crafty, weak attacks, decent magic."}
if (s == "") {d.innerHTML = "Please Select a Character Class to view more information."}
}

</script>

<select name="Character_Class" id="CharClass" onchange="showDetails(this)">
                                                       <option value="" selected="selected">Choose a Class</option>
                                                       <option value="Enchantress">Enchantress</option>
                                                         <option value="Knight">Knight</option>
                                                           <option value="Archer">Archer</option>
                                                             <option value="Thief">Thief</option>
                                                       </select>

<li><div id="classDescription"></div></li>

<body>
    <form action= "">
        <fieldset>
            <select id="selColor">
                <option value="FFFFFF">White</option>
                <option value="#A9A9A9">Gray</option>
                <option value="#000000">Black</option>
                <option value="#FF0000">Red</option>
                <option value="#FFA500">Orange</option>
                <option value="FFFF00">Yellow</option>
                <option value="#9ACD32">Green</option>
                <option value="#0000FF">Blue</option>
                <option value="#4B0082">Indigo</option>
                <option value="#9400D3">Violet</option>
            </select>

            <input type="button" 
                   value="Change Color" 
                   onclick="changeColor()" />
        </fieldset>
    </form>
<script type="text/javascript">
    //<![CDATA[
    function changeColor() {
        var selColor = document.getElementById("selColor")
        var color = selColor.value
        var colorid = 
        if (confirm("would you like to change color to "+colorid+"?")) {
            document.body.style.backgroundColor = color
        }

    }
    //]]>
</script>

</body>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" href="standard.css" type="text/css" />
<script type="text/javascript" src="calendar.js"></script>
<title>CALENDAR</title>
</head>
<body>
<label>Date :&nbsp;</label><input name="startdate" type="text" onClick="displayDatePicker('startdate')">
<script type="text/javascript">
window.onLoad(displayDatePicker('ADate'));
</script></body></html>

var datePickerDivID = "datepicker";
var iFrameDivID = "datepickeriframe";

var dayArrayShort = new Array('Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa');
var dayArrayMed = new Array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
var dayArrayLong = new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
var monthArrayShort = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');
var monthArrayMed = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'June', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec');
var monthArrayLong = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');
 
// these variables define the date formatting we're expecting and outputting.
// If you want to use a different format by default, change the defaultDateSeparator
// and defaultDateFormat variables either here or on your HTML page.
var defaultDateSeparator = "/";        // common values would be "/" or "."
var defaultDateFormat = "dmy"    // valid values are "mdy", "dmy", and "ymd"
var dateSeparator = defaultDateSeparator;
var dateFormat = defaultDateFormat;


function displayDatePicker(dateFieldName, displayBelowThisObject, dtFormat, dtSep)
{
  var targetDateField = document.getElementsByName (dateFieldName).item(0);
 
  // if we weren't told what node to display the datepicker beneath, just display it
  // beneath the date field we're updating
  if (!displayBelowThisObject)
    displayBelowThisObject = targetDateField;
 
  // if a date separator character was given, update the dateSeparator variable
  if (dtSep)
    dateSeparator = dtSep;
  else
    dateSeparator = defaultDateSeparator;
 
  // if a date format was given, update the dateFormat variable
  if (dtFormat)
    dateFormat = dtFormat;
  else
    dateFormat = defaultDateFormat;
 
  var x = displayBelowThisObject.offsetLeft;
  var y = displayBelowThisObject.offsetTop + displayBelowThisObject.offsetHeight ;
 
  // deal with elements inside tables and such
  var parent = displayBelowThisObject;
  while (parent.offsetParent) {
    parent = parent.offsetParent;
    x += parent.offsetLeft;
    y += parent.offsetTop ;
  }
 
  drawDatePicker(targetDateField, x, y);
}


/**
Draw the datepicker object (which is just a table with calendar elements) at the
specified x and y coordinates, using the targetDateField object as the input tag
that will ultimately be populated with a date.

This function will normally be called by the displayDatePicker function.
*/
function drawDatePicker(targetDateField, x, y)
{
  var dt = getFieldDate(targetDateField.value );
 
  // the datepicker table will be drawn inside of a <div> with an ID defined by the
  // global datePickerDivID variable. If such a div doesn't yet exist on the HTML
  // document we're working with, add one.
  if (!document.getElementById(datePickerDivID)) {
    // don't use innerHTML to update the body, because it can cause global variables
    // that are currently pointing to objects on the page to have bad references
    //document.body.innerHTML += "<div id='" + datePickerDivID + "' class='dpDiv'></div>";
    var newNode = document.createElement("div");
    newNode.setAttribute("id", datePickerDivID);
    newNode.setAttribute("class", "dpDiv");
    newNode.setAttribute("style", "visibility: hidden;");
    document.body.appendChild(newNode);
  }
 
  // move the datepicker div to the proper x,y coordinate and toggle the visiblity
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.position = "absolute";
  pickerDiv.style.left = x + "px";
  pickerDiv.style.top = y + "px";
  pickerDiv.style.visibility = (pickerDiv.style.visibility == "visible" ? "hidden" : "visible");
  pickerDiv.style.display = (pickerDiv.style.display == "block" ? "none" : "block");
  pickerDiv.style.zIndex = 10000;
 
  // draw the datepicker table
  refreshDatePicker(targetDateField.name, dt.getFullYear(), dt.getMonth(), dt.getDate());
}


/**
This is the function that actually draws the datepicker calendar.
*/
function refreshDatePicker(dateFieldName, year, month, day)
{
  // if no arguments are passed, use today's date; otherwise, month and year
  // are required (if a day is passed, it will be highlighted later)
  var thisDay = new Date();
 
  if ((month >= 0) && (year > 0)) {
    thisDay = new Date(year, month, 1);
  } else {
    day = thisDay.getDate();
    thisDay.setDate(1);
  }
 
  // the calendar will be drawn as a table
  // you can customize the table elements with a global CSS style sheet,
  // or by hardcoding style and formatting elements below
  var crlf = "\r\n";
  var TABLE = "<table cols=7 class='dpTable'>" + crlf;
  var xTABLE = "</table>" + crlf;
  var TR = "<tr class='dpTR'>";
  var TR_title = "<tr class='dpTitleTR'>";
  var TR_days = "<tr class='dpDayTR'>";
  var TR_todaybutton = "<tr class='dpTodayButtonTR'>";
  var xTR = "</tr>" + crlf;
  var TD = "<td class='dpTD' onMouseOut='this.className=\"dpTD\";' onMouseOver=' this.className=\"dpTDHover\";' ";    // leave this tag open, because we'll be adding an onClick event
  var TD_title = "<td colspan=5 class='dpTitleTD'>";
  var TD_buttons = "<td class='dpButtonTD'>";
  var TD_todaybutton = "<td colspan=7 class='dpTodayButtonTD'>";
  var TD_days = "<td class='dpDayTD'>";
  var TD_selected = "<td class='dpDayHighlightTD' onMouseOut='this.className=\"dpDayHighlightTD\";' onMouseOver='this.className=\"dpTDHover\";' ";    // leave this tag open, because we'll be adding an onClick event
  var xTD = "</td>" + crlf;
  var DIV_title = "<div class='dpTitleText'>";
  var DIV_selected = "<div class='dpDayHighlight'>";
  var xDIV = "</div>";
 
  // start generating the code for the calendar table
  var html = TABLE;
 
  // this is the title bar, which displays the month and the buttons to
  // go back to a previous month or forward to the next month
  html += TR_title;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, -1, "&lt;") + xTD;
  html += TD_title + DIV_title + monthArrayLong[ thisDay.getMonth()] + " " + thisDay.getFullYear() + xDIV + xTD;
  html += TD_buttons + getButtonCode(dateFieldName, thisDay, 1, "&gt;") + xTD;
  html += xTR;
 
  // this is the row that indicates which day of the week we're on
  html += TR_days;
  for(i = 0; i < dayArrayShort.length; i++)
    html += TD_days + dayArrayShort[i] + xTD;
  html += xTR;
 
  // now we'll start populating the table with days of the month
  html += TR;
 
  // first, the leading blanks
  for (i = 0; i < thisDay.getDay(); i++)
    html += TD + "&nbsp;" + xTD;
 
  // now, the days of the month
  do {
    dayNum = thisDay.getDate();
    TD_onclick = " onclick=\"updateDateField('" + dateFieldName + "', '" + getDateString(thisDay) + "');\">";
    
    if (dayNum == day)
      html += TD_selected + TD_onclick + DIV_selected + dayNum + xDIV + xTD;
    else
      html += TD + TD_onclick + dayNum + xTD;
    
    // if this is a Saturday, start a new row
    if (thisDay.getDay() == 6)
      html += xTR + TR;
    
    // increment the day
    thisDay.setDate(thisDay.getDate() + 1);
  } while (thisDay.getDate() > 1)
 
  // fill in any trailing blanks
  if (thisDay.getDay() > 0) {
    for (i = 6; i > thisDay.getDay(); i--)
      html += TD + "&nbsp;" + xTD;
  }
  html += xTR;
 
  // add a button to allow the user to easily return to today, or close the calendar
  var today = new Date();
  var todayString = "Today is " + dayArrayMed[today.getDay()] + ", " + monthArrayMed[ today.getMonth()] + " " + today.getDate();
  html += TR_todaybutton + TD_todaybutton;
  html += "<button class='dpTodayButton' onClick='refreshDatePicker(\"" + dateFieldName + "\");'>this month</button> ";
  html += xTD + xTR;
 
  // and finally, close the table
  html += xTABLE;
 
  document.getElementById(datePickerDivID).innerHTML = html;
  // add an "iFrame shim" to allow the datepicker to display above selection lists
  adjustiFrame();
}


/**
Convenience function for writing the code for the buttons that bring us back or forward
a month.
*/
function getButtonCode(dateFieldName, dateVal, adjust, label)
{
  var newMonth = (dateVal.getMonth () + adjust) % 12;
  var newYear = dateVal.getFullYear() + parseInt((dateVal.getMonth() + adjust) / 12);
  if (newMonth < 0) {
    newMonth += 12;
    newYear += -1;
  }
 
  return "<button class='dpButton' onClick='refreshDatePicker(\"" + dateFieldName + "\", " + newYear + ", " + newMonth + ");'>" + label + "</button>";
}


/**
Convert a JavaScript Date object to a string, based on the dateFormat and dateSeparator
variables at the beginning of this script library.
*/
function getDateString(dateVal)
{
  var dayString = "00" + dateVal.getDate();
  var monthString = "00" + (dateVal.getMonth()+1);
  dayString = dayString.substring(dayString.length - 2);
  monthString = monthString.substring(monthString.length - 2);
 
  switch (dateFormat) {
    case "dmy" :
      return dayString + dateSeparator + monthString + dateSeparator + dateVal.getFullYear();
    case "ymd" :
      return dateVal.getFullYear() + dateSeparator + monthString + dateSeparator + dayString;
    case "mdy" :
    default :
      return monthString + dateSeparator + dayString + dateSeparator + dateVal.getFullYear();
  }
}


/**
Convert a string to a JavaScript Date object.
*/
function getFieldDate(dateString)
{
  var dateVal;
  var dArray;
  var d, m, y;
 
  try {
    dArray = splitDateString(dateString);
    if (dArray) {
      switch (dateFormat) {
        case "dmy" :
          d = parseInt(dArray[0], 10);
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[2], 10);
          break;
        case "ymd" :
          d = parseInt(dArray[2], 10);
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[0], 10);
          break;
        case "mdy" :
        default :
          d = parseInt(dArray[1], 10);
          m = parseInt(dArray[0], 10) - 1;
          y = parseInt(dArray[2], 10);
          break;
      }
      dateVal = new Date(y, m, d);
    } else if (dateString) {
      dateVal = new Date(dateString);
    } else {
      dateVal = new Date();
    }
  } catch(e) {
    dateVal = new Date();
  }
 
  return dateVal;
}


/**
Try to split a date string into an array of elements, using common date separators.
If the date is split, an array is returned; otherwise, we just return false.
*/
function splitDateString(dateString)
{
  var dArray;
  if (dateString.indexOf("/") >= 0)
    dArray = dateString.split("/");
  else if (dateString.indexOf(".") >= 0)
    dArray = dateString.split(".");
  else if (dateString.indexOf("-") >= 0)
    dArray = dateString.split("-");
  else if (dateString.indexOf("\\") >= 0)
    dArray = dateString.split("\\");
  else
    dArray = false;
 
  return dArray;
}


function updateDateField(dateFieldName, dateString)
{
  var targetDateField = document.getElementsByName (dateFieldName).item(0);
  if (dateString)
    targetDateField.value = dateString;
 
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.visibility = "hidden";
  pickerDiv.style.display = "none";
 
  adjustiFrame();
  targetDateField.focus();
 
  // after the datepicker has closed, optionally run a user-defined function called
  // datePickerClosed, passing the field that was just updated as a parameter
  // (note that this will only run if the user actually selected a date from the datepicker)
  if ((dateString) && (typeof(datePickerClosed) == "function"))
    datePickerClosed(targetDateField);
}


/**
Use an "iFrame shim" to deal with problems where the datepicker shows up behind
selection list elements, if they're below the datepicker. The problem and solution are
described at:

http://dotnetjunkies.com/WebLog/jking/archive/2003/07/21/488.aspx
http://dotnetjunkies.com/WebLog/jking/archive/2003/10/30/2975.aspx
*/
function adjustiFrame(pickerDiv, iFrameDiv)
{
  // we know that Opera doesn't like something about this, so if we
  // think we're using Opera, don't even try
  var is_opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
  if (is_opera)
    return;
  
  // put a try/catch block around the whole thing, just in case
  try {
    if (!document.getElementById(iFrameDivID)) {
      // don't use innerHTML to update the body, because it can cause global variables
      // that are currently pointing to objects on the page to have bad references
      //document.body.innerHTML += "<iframe id='" + iFrameDivID + "' src='javascript:false;' scrolling='no' frameborder='0'>";
      var newNode = document.createElement("iFrame");
      newNode.setAttribute("id", iFrameDivID);
      newNode.setAttribute("src", "javascript:false;");
      newNode.setAttribute("scrolling", "no");
      newNode.setAttribute ("frameborder", "0");
      document.body.appendChild(newNode);
    }
    
    if (!pickerDiv)
      pickerDiv = document.getElementById(datePickerDivID);
    if (!iFrameDiv)
      iFrameDiv = document.getElementById(iFrameDivID);
    
    try {
      iFrameDiv.style.position = "absolute";
      iFrameDiv.style.width = pickerDiv.offsetWidth;
      iFrameDiv.style.height = pickerDiv.offsetHeight ;
      iFrameDiv.style.top = pickerDiv.style.top;
      iFrameDiv.style.left = pickerDiv.style.left;
      iFrameDiv.style.zIndex = pickerDiv.style.zIndex - 1;
      iFrameDiv.style.visibility = pickerDiv.style.visibility ;
      iFrameDiv.style.display = pickerDiv.style.display;
    } catch(e) {
    }
 
  } catch (ee) {
  }
 
}

body { margin:5px 5px; font-size:0.9em; font-family: "Myriad Pro", "Trebuchet MS", Arial; font-size:14px; border:1px solid #000; background-color:#CCCCFF;}
a { color:#64a520; text-decoration:none;}
a:hover { text-decoration:underline;}

	
	
/*Calendar Styles*/
	
/* the div that holds the date picker calendar */
.dpDiv {
	}


/* the table (within the div) that holds the date picker calendar */
.dpTable {
	font-family: Tahoma, Arial, Helvetica, sans-serif;
	font-size: 12px;
	text-align: center;
	color:#000000;
	background-color:#99CCCC;
	border: 1px solid #AAAAAA;
	}


/* a table row that holds date numbers (either blank or 1-31) */
.dpTR {
	}


/* the top table row that holds the month, year, and forward/backward buttons */
.dpTitleTR {
	}


/* the second table row, that holds the names of days of the week (Mo, Tu, We, etc.) */
.dpDayTR {
	}


/* the bottom table row, that has the "This Month" and "Close" buttons */
.dpTodayButtonTR {
	}


/* a table cell that holds a date number (either blank or 1-31) */
.dpTD {
	border: 1px solid #ece9d8;
	}


/* a table cell that holds a highlighted day (usually either today's date or the current date field value) */
.dpDayHighlightTD {
	background-color: #CCCCCC;
	border: 1px solid #AAAAAA;
	}


/* the date number table cell that the mouse pointer is currently over (you can use contrasting colors to make it apparent which cell is being hovered over) */
.dpTDHover {
	background-color: #aca998;
	border: 1px solid #888888;
	cursor: pointer;
	color: red;
	}


/* the table cell that holds the name of the month and the year */
.dpTitleTD {
	}


/* a table cell that holds one of the forward/backward buttons */
.dpButtonTD {
	}


/* the table cell that holds the "This Month" or "Close" button at the bottom */
.dpTodayButtonTD {
	}


/* a table cell that holds the names of days of the week (Mo, Tu, We, etc.) */
.dpDayTD {
	background-color: #CCCCCC;
	border: 1px solid #AAAAAA;
	color: white;
	}


/* additional style information for the text that indicates the month and year */
.dpTitleText {
	font-size: 12px;
	color: gray;
	font-weight: bold;
	}


/* additional style information for the cell that holds a highlighted day (usually either today's date or the current date field value) */ 
.dpDayHighlight {
	color: 4060ff;
	font-weight: bold;
	}


/* the forward/backward buttons at the top */
.dpButton {
	font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: gray;
	background: #d8e8ff;
	font-weight: bold;
	padding: 0px;
	}


/* the "This Month" and "Close" buttons at the bottom */
.dpTodayButton {
	font-family: Verdana, Tahoma, Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: gray;
	background: #d8e8ff;
	font-weight: bold;
	}

<script>
window.addEvent('domready', function() {
var tabs = $$('div[id^="tab"]');
tabs.fade('hide');

$$('#buttons li a').each(function(element,index){
    element.addEvent('click',function(){
        tabs.fade(0);
        tabs[index].fade(1);
    });
});
});
</script> 

<ul id="buttons">
     <li><a href="#">button 1</a></li>
     <li><a href="#">button 2</a></li>
     <li><a href="#">button 3</a></li>
     <li><a href="#">button 4</a></li>
</ul>

<div id="tab1">content for button 1</div>
<div id="tab2">content for button 2</div>
<div id="tab3">content for button 3</div>
<div id="tab4">content for button 4</div>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>

<script type ="text/javascript">
function HouseSel(){
document.getElementById("HouseSelect").value = '3'
alert (document.getElementById("HouseSelect").value);
}
</script>
</head>

<body>


<form action="https://www.paypal.com/us/cgi-bin/webscr" method="post" name="_xclick">

<select name="item_name" id="HouseSelect">
                  <option value="0" selected="selected">--Please Select a House--</option>
                  <option value="1">Nags Head</option>
                    <option value="Rent Deposite: Calib  ">Calibre</option>
                </select>

<input name="calculate3" type="button" id="calculate3" tabindex="2"     
        onclick="HouseSel(); " value="Calculate"/>
        </form>
</body>
</html>