// JavaScript Document
function ajaxHelper(functionName) {
  var xmlHttp;
  // Firefox, Opera 8.0+, Safari, SeaMonkey
  try {    
    xmlHttp=new XMLHttpRequest();
  }
  catch (e) {   
    // Internet Explorer 
    try {    
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e) {   
      try {      
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");      
      }
      catch (e) {      
        alert("Sorry, your browser does not support AJAX.");
        return false;      
      }    
    }  
  } 
 
  xmlHttp.onreadystatechange=function() {
    //The request is complete == state 4
   
	if (xmlHttp.readyState==4) {
	 document.getElementById("Loader").innerHTML= "";
      var response=xmlHttp.responseText;
      var open_escape = "('";
	  var close_escape = "')"
	 //Send reponse to _ajax hook of passed function name
      eval(functionName + "_ajax" + open_escape + encodeURIComponent(response) + close_escape);
    }else{
		//document.getElementById("Loader").style.dysplay = "block";
		document.getElementById("Loader").innerHTML= "<img src='images/loading.gif' />";
	}
  }
 
  //Get request string from _setup hook of passed function name
  var requestString = eval(functionName+"_init" + '()');
  if (requestString) {
    xmlHttp.open("POST", requestString, true);
	xmlHttp.setRequestHeader('Content-type','text/html;charset=utf-8;');
    xmlHttp.send(null);
  }
}