function ajax() 
	{ 
		//fuction to return the xml http object
		var xmlhttp=false;	
		try{
			xmlhttp=new XMLHttpRequest();
		}
		catch(e)	{		
			try{			
				xmlhttp= new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e){
				try{
					req = new ActiveXObject("Msxml2.XMLHTTP");
				}
				catch(e1){
					xmlhttp=false;
				}
			}
		}
		 	
		return xmlhttp;
    }
  
  	function ajax2(url, vars, callbackFunction)
	{
  		var request = window.XMLHttpRequest ?new XMLHttpRequest() : new ActiveXObject("MSXML2.XMLHTTP.3.0");
  		request.open("POST", url, true);
  		request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 
 
  		request.onreadystatechange = function()
  		{
    		if (request.readyState == 4 && request.status == 200)
    		{
      			if (request.responseText)
      			{
         			 callbackFunction(request.responseText);
      			}
   			}
  		};
  		request.send(vars);
	}