function ajaxFunction(){
	var xmlHttp=null;
	
	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;
      		}
    	}
  	}
	return xmlHttp;
}