JavaScript - Ie/ff Alignment Issue (js/css Problem)

function checkStatus(box){
  if(box.checked != box.defaultChecked){
  alert("box status has changed");
  }
}

HTML
<input type="checkbox" name="mycheckbox" id="mycheckbox" value="&cost=free"  onclick="checkStatus(this)"  />

<input type="checkbox" name="mycheckbox" id="mycheckbox" value="&cost=free" />

  window.onload = function (){
  var mybox = document.getElementById('mycheckbox');
   mybox.onclick = checkStatus ; //how to get this to work??

//none of the following work
 //mybox.onclick = checkStatus; //this calls the function but I don't have a box ref
 //mybox.onclick = checkStatus();
 //mybox.onclick = checkStatus(this);
 //mybox.onclick = checkStatus(mybox);
  }

var newtbody = document.createElement("tbody");
newtbody.id = "ROW"+newkey;
document.getElementById(trElement).parentNode.insertBefore(newtbody,document.getElementById(trElement));
newtbody.innerHTML = gcp;

<script type="text/javascript">
//<![CDATA[
var audioPlaylist;
var Playlist;
jQuery(document).ready(function(){

    Playlist = function(instance, playlist, options) {
        var self = this;

        this.instance = instance; // String: To associate specific HTML with this playlist
        this.playlist = playlist; // Array of Objects: The playlist
        this.options = options; // Object: The jPlayer constructor options for this playlist

        this.current = 0;

        this.cssId = {
            jPlayer: "jquery_jplayer_",
            interface: "jp_interface_",
            playlist: "jp_playlist_"
        };
        this.cssSelector = {};

        jQuery.each(this.cssId, function(entity, id) {
            self.cssSelector[entity] = "#" + id + self.instance;
        });

        if(!this.options.cssSelectorAncestor) {
            this.options.cssSelectorAncestor = this.cssSelector.interface;
        }

        jQuery(this.cssSelector.jPlayer).jPlayer(this.options);

        jQuery(this.cssSelector.interface + " .jp-previous").click(function() {
            self.playlistPrev();
            jQuery(this).blur();
            return false;
        });

        jQuery(this.cssSelector.interface + " .jp-next").click(function() {
            self.playlistNext();
            jQuery(this).blur();
            return false;
        });
    };

    Playlist.prototype = {
        displayPlaylist: function() {
            var self = this;
            jQuery(this.cssSelector.playlist + " ul").empty();
            for (i=0; i < this.playlist.length; i++) {
                var listItem = (i === this.playlist.length-1) ? "<li class='jp-playlist-last'>" : "<li>";
                listItem += "<a href='#' id='" + this.cssId.playlist + this.instance + "_item_" + i +"' tabindex='1'>"+ this.playlist[i].name +"</a>";

                // Create links to free media
                if(this.playlist[i].free) {
                    var first = true;
                    listItem += "<div class='jp-free-media'>(";
                    jQuery.each(this.playlist[i], function(property,value) {
                        if(jQuery.jPlayer.prototype.format[property]) { // Check property is a media format.
                            if(first) {
                                first = false;
                            } else {
                                listItem += " | ";
                            }
                            listItem += "<a id='" + self.cssId.playlist + self.instance + "_item_" + i + "_" + property + "' href='" + value + "' tabindex='1'>" + property + "</a>";
                        }
                    });
                    listItem += ")</span>";
                }

                listItem += "</li>";

                // Associate playlist items with their media
                jQuery(this.cssSelector.playlist + " ul").append(listItem);
                jQuery(this.cssSelector.playlist + "_item_" + i).data("index", i).click(function() {
                    var index = jQuery(this).data("index");
                    if(self.current !== index) {
                        self.playlistChange(index);
                    } else {
                        jQuery(self.cssSelector.jPlayer).jPlayer("play");
                    }
                    $(this).blur();
                    return false;
                });

                // Disable free media links to force access via right click
                if(this.playlist[i].free) {
                    jQuery.each(this.playlist[i], function(property,value) {
                        if(jQuery.jPlayer.prototype.format[property]) { // Check property is a media format.
                            jQuery(self.cssSelector.playlist + "_item_" + i + "_" + property).data("index", i).click(function() {
                                var index = $(this).data("index");
                                jQuery(self.cssSelector.playlist + "_item_" + index).click();
                                jQuery(this).blur();
                                return false;
                            });
                        }
                    });
                }
            }
        },
        playlistInit: function(autoplay) {
            if(autoplay) {
                this.playlistChange(this.current);
            } else {
                this.playlistConfig(this.current);
            }
        },
        playlistConfig: function(index) {
            jQuery(this.cssSelector.playlist + "_item_" + this.current).removeClass("jp-playlist-current").parent().removeClass("jp-playlist-current");
            jQuery(this.cssSelector.playlist + "_item_" + index).addClass("jp-playlist-current").parent().addClass("jp-playlist-current");
            this.current = index;
            jQuery(this.cssSelector.jPlayer).jPlayer("setMedia", this.playlist[this.current]);
        },
        playlistChange: function(index) {
            this.playlistConfig(index);
            jQuery(this.cssSelector.jPlayer).jPlayer("play");
        },
        playlistNext: function() {
            var index = (this.current + 1 < this.playlist.length) ? this.current + 1 : 0;
            this.playlistChange(index);
        },
        playlistPrev: function() {
            var index = (this.current - 1 >= 0) ? this.current - 1 : this.playlist.length - 1;
            this.playlistChange(index);
        },
        supplied: "mp3",
        addMedia: function(media){
            this.playlist.push(media);
            this.playlistNext();
        }
    };

});

var last_el='';
jQuery('.track .wrap .play').click(function(){
    var cur_img = jQuery(this).css('backgroundImage');
    if(cur_img.substring(cur_img.length-10)=='play.png")'){
        if(last_el!=''){
            last_el.css('background-image','url("img/play.png")');
        }
        var el = jQuery(this);
        last_el = el;
        parent.frames[1].addSong(el.attr("title"),el.attr("mp3"),el.attr("ogg"));
        el.css('background-image','url("img/pause.png")');
    }else{
        parent.frames[1].pauseSong();
    }
});
jQuery('.jp-interface .jp-pause').click(function(){
    last_el.css('background-image','url("img/play.png")');
});
jQuery('body a').click(function(){
    var el = jQuery(this);
    var href = el.attr('href');
    if(href.substring(0,1)=='/'){
        parent.location.href = parent.location.href + href.substring(1,href.length);
    }    
});

//]]>
</script>

<html>
<head>
<title>Untitled</title>
<script>

    
function enable()

{
    document.myForm.textbox.disabled = false;
document.myForm.textbox2.value = 0;
}
function disable()

{
    
    document.myForm.textbox.disabled = true;
    document.myForm.textbox2.value = 10;
}

function value()
{
document.myForm.textbox2.value = 10;
}
</script>
</head>
<body>
<form name="myForm">
    <table>
        <tr> 
    <label> Do you accept </label> 
    <td> 
    <select name="na">
        <option value="yes" onclick="disable()"> YES </option>
        <option value="no"  onclick="enable()">  NO  </option>
        <option value="NA" onclick="disable()">  NA  </option>
    </select> 
        <input type="text" name="textbox" value="" disabled>
        <input type="text" name="textbox2" value="10" > 
    </td>
    </tr> 
    <tr>
        <td>

</td>
</tr>


</form>
</body>
</html>

<form name="logindetails" method="post">
<input type="text" name="email" value="Email Address" />
<input type="password" name="combination" value="Combination" />
<input type="submit" value="Submit" onclick="logindetails()">

<script type="text/javascript">
function logindetails()
{
var values = ["email", "password", "password"];
$("input").each(function(i){ $(this).val(values[i]); }); 
document.getElementById("recaptcha_response_field" ).focus();  
}
</script>

<b><i><u> </u></i></b>

messageVal = messageVal.replace(/(<[^\/>]*>)+[\s]*(<\/[^>]*>)+/g,'');

<b> hello <u><i> </i></u></b>

<b> hello

<b> hello </b>

<script type="text/javascript">
//<![CDATA[
var audioPlaylist;
var Playlist;
jQuery(document).ready(function(){

    Playlist = function(instance, playlist, options) {
        var self = this;

        this.instance = instance; // String: To associate specific HTML with this playlist
        this.playlist = playlist; // Array of Objects: The playlist
        this.options = options; // Object: The jPlayer constructor options for this playlist

        this.current = 0;

        this.cssId = {
            jPlayer: "jquery_jplayer_",
            interface: "jp_interface_",
            playlist: "jp_playlist_"
        };
        this.cssSelector = {};

        jQuery.each(this.cssId, function(entity, id) {
            self.cssSelector[entity] = "#" + id + self.instance;
        });

        if(!this.options.cssSelectorAncestor) {
            this.options.cssSelectorAncestor = this.cssSelector.interface;
        }

        jQuery(this.cssSelector.jPlayer).jPlayer(this.options);

        jQuery(this.cssSelector.interface + " .jp-previous").click(function() {
            self.playlistPrev();
            jQuery(this).blur();
            return false;
        });

        jQuery(this.cssSelector.interface + " .jp-next").click(function() {
            self.playlistNext();
            jQuery(this).blur();
            return false;
        });
    };

    Playlist.prototype = {
        displayPlaylist: function() {
            var self = this;
            jQuery(this.cssSelector.playlist + " ul").empty();
            for (i=0; i < this.playlist.length; i++) {
                var listItem = (i === this.playlist.length-1) ? "<li class='jp-playlist-last'>" : "<li>";
                listItem += "<a href='#' id='" + this.cssId.playlist + this.instance + "_item_" + i +"' tabindex='1'>"+ this.playlist[i].name +"</a>";

                // Create links to free media
                if(this.playlist[i].free) {
                    var first = true;
                    listItem += "<div class='jp-free-media'>(";
                    jQuery.each(this.playlist[i], function(property,value) {
                        if(jQuery.jPlayer.prototype.format[property]) { // Check property is a media format.
                            if(first) {
                                first = false;
                            } else {
                                listItem += " | ";
                            }
                            listItem += "<a id='" + self.cssId.playlist + self.instance + "_item_" + i + "_" + property + "' href='" + value + "' tabindex='1'>" + property + "</a>";
                        }
                    });
                    listItem += ")</span>";
                }

                listItem += "</li>";

                // Associate playlist items with their media
                jQuery(this.cssSelector.playlist + " ul").append(listItem);
                jQuery(this.cssSelector.playlist + "_item_" + i).data("index", i).click(function() {
                    var index = jQuery(this).data("index");
                    if(self.current !== index) {
                        self.playlistChange(index);
                    } else {
                        jQuery(self.cssSelector.jPlayer).jPlayer("play");
                    }
                    $(this).blur();
                    return false;
                });

                // Disable free media links to force access via right click
                if(this.playlist[i].free) {
                    jQuery.each(this.playlist[i], function(property,value) {
                        if(jQuery.jPlayer.prototype.format[property]) { // Check property is a media format.
                            jQuery(self.cssSelector.playlist + "_item_" + i + "_" + property).data("index", i).click(function() {
                                var index = $(this).data("index");
                                jQuery(self.cssSelector.playlist + "_item_" + index).click();
                                jQuery(this).blur();
                                return false;
                            });
                        }
                    });
                }
            }
        },
        playlistInit: function(autoplay) {
            if(autoplay) {
                this.playlistChange(this.current);
            } else {
                this.playlistConfig(this.current);
            }
        },
        playlistConfig: function(index) {
            jQuery(this.cssSelector.playlist + "_item_" + this.current).removeClass("jp-playlist-current").parent().removeClass("jp-playlist-current");
            jQuery(this.cssSelector.playlist + "_item_" + index).addClass("jp-playlist-current").parent().addClass("jp-playlist-current");
            this.current = index;
            jQuery(this.cssSelector.jPlayer).jPlayer("setMedia", this.playlist[this.current]);
        },
        playlistChange: function(index) {
            this.playlistConfig(index);
            jQuery(this.cssSelector.jPlayer).jPlayer("play");
        },
        playlistNext: function() {
            var index = (this.current + 1 < this.playlist.length) ? this.current + 1 : 0;
            this.playlistChange(index);
        },
        playlistPrev: function() {
            var index = (this.current - 1 >= 0) ? this.current - 1 : this.playlist.length - 1;
            this.playlistChange(index);
        },
        supplied: "mp3",
        addMedia: function(media){
            this.playlist.push(media);
            this.playlistNext();
        }
    };

});

var last_el='';
jQuery('.track .wrap .play').click(function(){
    var cur_img = jQuery(this).css('backgroundImage');
    if(cur_img.substring(cur_img.length-10)=='play.png")'){
        if(last_el!=''){
            last_el.css('background-image','url("img/play.png")');
        }
        var el = jQuery(this);
        last_el = el;
        parent.frames[1].addSong(el.attr("title"),el.attr("mp3"),el.attr("ogg"));
        el.css('background-image','url("img/pause.png")');
    }else{
        parent.frames[1].pauseSong();
    }
});
jQuery('.jp-interface .jp-pause').click(function(){
    last_el.css('background-image','url("img/play.png")');
});
jQuery('body a').click(function(){
    var el = jQuery(this);
    var href = el.attr('href');
    if(href.substring(0,1)=='/'){
        parent.location.href = parent.location.href + href.substring(1,href.length);
    }    
});

//]]>
</script>

<html>

<script>

function doit(){
document.write(document.getElementById('myIMG').getAttribute('src'));
}

</script>

<body onLoad="doit()">

<img src="blabla.jpg" id="myIMG">

dose=1
A = document.rhogam.bleed.value
B = document.rhogam.volume.value
dose= (A*B)/3
dose=Math.round(dose*10)/10;