URL not being sent in AJAX

[rajug]

Hello there,

I have a problem using a simple AJAX.
I have following HTML:


<div id="divComments" style="border:1px #000000 inset;width:400px;height:150px;overflow:auto;background-color:#FFFFFF;padding:2px;"></div>
<input name="cCommentID" type="text" value="" id="cCommentID">
<input name="totalComments" type="text" id="totalComments" value="<?php echo $TotalCommentsPHP;?>">
<table width="400" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="32&#37;" align="left"><a href="javascript:void(null);" onClick="PreviousComment();">&laquo; Previous</a></td>
<td width="68%" align="right"><a href="javascript:void(null);" onClick="NextComment();">Next &raquo;</a></td>
</tr>
</table>


And I have this javascript code:


var jsComID=new Array();
jsComID[0]=1;
jsComID[1]=2;
jsComID[2]=3;
var objXMLHttp = null;
if(window.XMLHttpRequest)
objXMLHttp = new XMLHttpRequest();
else if(window.ActiveXObject)
objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP");
if (objXMLHttp == null){
alert ("Browser does not support HTTP Request");
}
function getObj(name){
if (document.getElementById){
this.obj = document.getElementById(name);
}
else if (document.all){
this.obj = document.all[name];
}
else if (document.layers){
this.obj = document.layers[name];
}
return this.obj
}
function ShowComment(url){
objXMLHttp.onreadystatechange=AfterOperation;
objXMLHttp.open("GET", url, true);
objXMLHttp.send(null);
}
function AfterOperation(){
var divObj = getObj('divComments');
if(objXMLHttp.readyState == 1){
//divObj.disabled = true;
}
if(objXMLHttp.readyState == 4 || objXMLHttp.readyState == "complete"){
//divObj.disabled = false;
divObj.innerHTML = objXMLHttp.responseText
}
}
var commentidObj1 = getObj('cCommentID');
commentidObj1.value = 0;
ShowComment('./modules/projects/show_comments.php?project_id=<?php echo $_GET['project_id'];?>&comment_id=' + jsComID[commentidObj1.value]);

function PreviousComment(){
var comid = "";
var totalObj = getObj('totalComments');
var commentidObj = getObj('cCommentID');
if(commentidObj.value == 0){
comid = totalObj.value;
}
else{
comid = parseInt(commentidObj.value) - 1;
}
ShowComment('./modules/projects/show_comments.php?project_id=<?php echo $_GET['project_id'];?>&comment_id=' + jsComID[comid]);
commentidObj.value = comid;
}
function NextComment(){
var comid = 0;
var totalObj = getObj('totalComments');
var commentidObj = getObj('cCommentID');
if(commentidObj.value == totalObj.value){
comid = 0;
}
else{
comid = parseInt(commentidObj.value) + 1;
}
ShowComment('./modules/projects/show_comments.php?project_id=<?php echo $_GET['project_id'];?>&comment_id=' + jsComID[comid]);
commentidObj.value = comid;
}
//====================================


What i want is, just pass the Previous and Next comment to retrive comment in the div. It works fine in FF but nothing even error in IE 6. The URL that i passed on the onClick is not being sent to the server.
What may be the problem there?

Thank you in advance.