function CriaAJAX(){
		var cAjax;
		try{
			cAjax = new XMLHttpRequest();
		}catch(e){
			try{
				cAjax = new ActiveXObject("Msxml2.XMLHTTP");
			}catch(e){
				try{
					cAjax = new ActiveXObject("Microsoft.XMLHTTP");
				}catch(e){
					cAjax = false;
				};
			};
		};
		return cAjax;
	}