function createRequestObject(){
	var request_;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
 		request_ = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
 		request_ = new XMLHttpRequest();
	}
return request_;
}


var http = createRequestObject();


function alege_provincie(foo){
	http.open('get', 'ajax.php?tip=alege_provincie&provincie=' + document.cautare.provincie.value);
	http.onreadystatechange = handleInfo;

	http.send(null);
	return false;
}
function handleInfo(){
	if(http.readyState == 4){
 	var response = http.responseText;
 	document.getElementById('zona').innerHTML = response;
	}
}