function getHTTPObject() {
  var xmlhttp;
 
  if(window.XMLHttpRequest){
    xmlhttp = new XMLHttpRequest();
  }
  else if (window.ActiveXObject){
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    if (!xmlhttp){
        xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
    
}
  return xmlhttp;

  
}
var http = getHTTPObject(); // We create the HTTP Object

/*
	Funtion Name=requestInfo 
	Param = url >> Url to call : id = Passing div id for multiple use ~ as a seprator for eg. div1~div2 :
	redirectPage >> if you like to redirect to other page once the event success then 
	the response text = 1 and the redirectPage not left empty
*/

    function requestInfo(url,id,redirectPage) { 
	//alert(url);
	
	cat_id=document.getElementById("towbar").value;
	
	
	//alert(cat_id);

	url = url+"?cat_id="+cat_id;
//alert(url)

			var temp=new Array();
			http.open("POST", url, true);
			http.onreadystatechange = function() {
			if(http.readyState!=4)	
								
				{
					
				document.getElementById(id).innerHTML = "Please wait.....";	
				}
				
			else if (http.readyState == 4) {
				  if(http.status==200) {
			  		var results=http.responseText;
		//alert(results);
		document.getElementById(id).innerHTML = results;
					if(redirectPage=="" || results!="1") {
						
						var temp=id.split("~"); // To display on multiple div 
						//alert(id);
						//alert(temp.length);
						var r=results.split("~"); // To display multiple data into the div 
						//alert(temp.length);
						if(temp.length>1) {
							for(i=0;i<temp.length;i++) {	
								//alert(temp[i]);
								document.getElementById(temp[i]).innerHTML=r[i];
							}
						} else {
							document.getElementById(id).innerHTML = results;
						}	
					} else {
						//alert(results);
						window.location.href=redirectPage;			
					}
				  } 
  				}
			}
			http.send(null);
       }