Ajax innerHTML and setTimeout

[grympel]

What I'm trying to do is to automaticly redirect the contents of a div tag after it has been changed by a ajax call.

Javascript:

<script type="text/javascript">
function ajaxSwap(div,func_id,args,dlay){
 var xmlhttp;
 if (window.XMLHttpRequest){
  // code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
 }
 else{
  // code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
 }
 xmlhttp.onreadystatechange=function(){
  if(xmlhttp.readyState==4 || xmlhttp.readyState=="complete"){
   document.getElementById(div).innerHTML = xmlhttp.responseText;
   // using the alert to test if it works or not. Will be changed to  calling ajaxSwap when working.
   if(dlay){setTimeout("alert('Test!')",5000);}
  }
  if(xmlhttp.readyState==0 || xmlhttp.readyState=="loading"){
   document.getElementById(div).innerHTML = '<div align=center>Loading</div>';
  }
 }
 xmlhttp.open("GET","/index2.php?option=com_jumi&fileid=10&func_id=" + func_id + args,true);
 xmlhttp.send(null);
}
</script>

PHP:

echo '
<div id="profile_content">
<script type="text/javascript">
ajaxSwap(\'profile_content\',1,\'\',1);
</script>
</div>';

Yes, I'm quite new to ajax and I'm not an expert with javascript but I can't be that far off getting this to work?