Ajax Menus

var loadedobjects=""
var rootdomain="http://"+window.location.hostname

function ajaxpage(url, containerid){
var page_request = false
if (window.XMLHttpRequest) // if Mozilla
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
} 
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
page_request.open('GET', url, true)
page_request.send(null)
}

function loadpage(page_request, containerid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(containerid).innerHTML=page_request.responseText
}

function loadobjs(){
if (!document.getElementById)
return
for (i=0; i



And the code for the menus themselves:



<a onmouseover="javascript:ajaxpage('/menu/lists/webmaster.htm', 'ajaxcolumn');" href="/webmasters/">web scripts</a> 
|  <a href="/Software_Engineering/" onmouseover="javascript:ajaxpage('/menu/lists/software_engineering.htm', 'ajaxcolumn');" >
software engineering</a>
| <a href="/Discrete_Maths/" onmouseover="javascript:ajaxpage('/menu/lists/discrete_maths.htm', 'ajaxcolumn');">discrete maths</a> 
| <a onmouseover="javascript:ajaxpage('/menu/lists/windows.htm', 'ajaxcolumn');" href="/Windows/">windows</a>

<hr>

<div id="ajaxcolumn">

Welcome to RustySpigot, the Computer Science Source


</div>