var xmlHttp;
function ajaxFunction(url)
{	
	   try
	   {  // Firefox, Opera 8.0+, Safari  
	      xmlHttp=new XMLHttpRequest();  
		  
	   }
	   catch (e)
	   {  // Internet Explorer  
	        try
			{   
			   xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");    
			}
		    catch (e)
			{    
				try
			    {      
					xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");      
				}
			    catch (e)
			    {      alert("Your browser does not support AJAX!");      
			           return false;      
			     }    
			}  
		}
  xmlHttp.onreadystatechange= ajaxResponse;

  xmlHttp.open("GET",url,true);
  xmlHttp.send(null);  
  }