Load multiple pages and in iFrame via links and URL variable

<!----------- Multi-iFrame resize and URL variable passing code Start ---------->

<!-- This is image is used to pass the onload information since I don't have access to the body 
tag in the CMS this page is running in -->
<img src="http://mydomain.com/img/spacer.gif" width="1" height="1" onLoad="setURL('myframe');">

<script type="text/javascript">

/***********************************************
* IFrame SSI script II- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
* Visit DynamicDrive.com for hundreds of original DHTML scripts
* This notice must stay intact for legal use
***********************************************/

//Input the IDs of the IFRAMES you wish to dynamically resize to match its content height:
//Separate each ID with a comma. Examples: ["myframe1", "myframe2"] or ["myframe"] or [] for none:
var iframeids=["myframe"]

//Should script hide iframe from browsers that don't support this script (non IE5+/NS6+ browsers. Recommended):
var iframehide="yes"

var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1]
var FFextraHeight=parseFloat(getFFVersion)>=0.1? 16 : 0 //extra height in px to add to iframe in FireFox 1.0+ browsers

function resizeCaller() {
var dyniframe=new Array()
for (i=0; i<iframeids.length; i++){
if (document.getElementById)
resizeIframe(iframeids[i])
//reveal iframe for lower end browsers? (see var above):
if ((document.all || document.getElementById) && iframehide=="no"){
var tempobj=document.all? document.all[iframeids[i]] : document.getElementById(iframeids[i])
tempobj.style.display="block"
}
}
}

function resizeIframe(frameid){
var currentfr=document.getElementById(frameid)
if (currentfr && !window.opera){
currentfr.style.display="block"
if (currentfr.contentDocument && currentfr.contentDocument.body.offsetHeight) //ns6 syntax
currentfr.height = currentfr.contentDocument.body.offsetHeight+FFextraHeight; 
else if (currentfr.Document && currentfr.Document.body.scrollHeight) //ie5+ syntax
currentfr.height = currentfr.Document.body.scrollHeight;
if (currentfr.addEventListener)
currentfr.addEventListener("load", readjustIframe, false)
else if (currentfr.attachEvent){
currentfr.detachEvent("onload", readjustIframe) // Bug fix line
currentfr.attachEvent("onload", readjustIframe)
}
}
}

function readjustIframe(loadevt) {
var crossevt=(window.event)? event : loadevt
var iframeroot=(crossevt.currentTarget)? crossevt.currentTarget : crossevt.srcElement
if (iframeroot)
resizeIframe(iframeroot.id);
}

function loadintoIframe(iframeid, url){
if (document.getElementById)
document.getElementById(iframeid).src=url
if (window.attachEvent) window.attachEvent("onload", loadintoIframe);
}


if (window.addEventListener)
window.addEventListener("load", resizeCaller, false)
else if (window.attachEvent)
window.attachEvent("onload", resizeCaller)
else
window.onload=resizeCaller

</script>

<script type="text/javascript">
function getUrlVars() 
{ 
var vars = [], hash; 
var hashes = self.location.href.slice(self.location.href.indexOf('?') + 1).split('&'); 
for(var i = 0; i < hashes.length; i++) 
{ 
hash = hashes[i].split('='); 
vars.push(hash[0]); 
vars[hash[0]] = hash[1]; 
} 
return vars; 
} 
 
var urlvars = getUrlVars(); 
 
function setURL(objid){ 
        var obj = window.document.getElementById(objid); 
        if(urlvars['URL']){ 
                obj.style.display = "block";  //show iframe 
                obj.src = urlvars['URL'];   //redirect iframe content to URL variable 
        } 
 
} 

document.observe("dom:loaded", function(){ 
 
setURL('myframe'); 
 
});

</script>

<!----------- Multi-iFrame resize and URL variable passing code End ---------->


<!--------------------  Dropdown menu code begin ----------------------------->

<!-- NOTE: for the purpose of this question I have linked to the files on the menu authors site -->

<link rel="stylesheet" type="text/css" href="http://www.stunicholls.com/menu/pro_dropdown_3/pro_dropdown_3.css" />

<script src="http://www.stunicholls.com/menu/pro_dropdown_3/stuHover.js" type="text/javascript"></script>

<ul id="nav" style="z-index:200;">
	<li class="top"><a href="#" id="services" class="top_link"><span class="down">Search Engines</span></a>
		<ul class="sub">
			<li><a href="#" class="fly">Major</a>
                  <ul>
                    <li><b>Top 3</b></li>
                    <li><a href="javascript:loadintoIframe('myframe', 'http://www.google.com')">Google</a></li>
                    <li><a href="javascript:loadintoIframe('myframe', 'http://www.yahoo.com')">Yahoo</a></li>
                    <li><a href="javascript:loadintoIframe('myframe', 'http://www.yahoo.com')">Bing</a></li>
                    <li><b>other</b></li>
                    <li><a href="javascript:loadintoIframe('myframe', 'http://www.ask.com')">Ask</a></li>
                </ul>
            </li>
        </ul>    
	</li>
</ul>

<!--------------------  Dropdown menu code end ----------------------------->


<!--------------------  iFrame code begin ----------------------------->
<div style="height:2000px;">
<iframe id="myframe" src="" scrolling="no" marginwidth="0" marginheight="0" frameborder="0" vspace="0" hspace="0" style="overflow:visible; height:100%; width:100%; display:none; border:0px; position:relative; left:-20px;"></iframe>
</div>
<!--------------------  iFrame code end ----------------------------->

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