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