function load_crons(request_url, param_string, divName)
  {
    var http = false;
    if (window.XMLHttpRequest){var http = new XMLHttpRequest(); if (http.overrideMimeType){http.overrideMimeType('text/xml');}}
    else if (window.ActiveXObject){try{var http = new ActiveXObject("Msxml2.XMLHTTP");}catch (e){try{var http = new ActiveXObject("Microsoft.XMLHTTP");}catch (e){}}}
    if(!http){return '';}
    var url = request_url;
    var params = param_string;
    http.open("POST", url, true);
    http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    http.setRequestHeader("Content-length", params.length);
    http.setRequestHeader("Connection", "close");
    http.onreadystatechange = function(){if(http.readyState == 4 && http.status == 200){return true;}}
    http.send(params);
  }