ajax div loading working on wamp not working on server

[sarahAria]

hi guys I have an ajax site on hamednet.ir that uses ajax to change content of a div file

but now when I uploaded it to server(direct admin) it don't work!!

I already have used a similar version on other hosts with cpanel then it works

I changed some permissions but no chance of success.

 

// here we define global variable
var ajaxdestination="";

function getdata(what,where) { // get data from source (what)
try {
   xmlhttp = window.XMLHttpRequest?new XMLHttpRequest():
  		new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e) { /* do nothing */ }

document.getElementById(where).innerHTML ="<center><img src='img/loading.gif'></center>";
// we are defining the destination DIV id, must be stored in global variable (ajaxdestination)
ajaxdestination=where;
xmlhttp.onreadystatechange = triggered; // when request finished, call the function to put result to destination DIV
xmlhttp.open("GET", what);
xmlhttp.send(null);
  return false;
}

function triggered() { // put data returned by requested URL to selected DIV
  if (xmlhttp.readyState == 4) if (xmlhttp.status == 200) 
    document.getElementById(ajaxdestination).innerHTML =xmlhttp.responseText;
}

 

 

<a href="#" onclick="getdata('change.html','paragraph');">

 

you can see full code on my site hemdnet.ir

[sarahAria]

seems strange??