function checkEntite(ele) {

	var http = (window.XMLHttpRequest) ? new XMLHttpRequest() : ((window.ActiveXObject) ? new ActiveXObject('Microsoft.XMLHTTP') : false);

	if (!http) {
		return;
	}

	var url = '/_lib/ajax.site.lib.php?cmd=checkEntite&ecs=' + ele.value;

	http.open('GET', url, false);
	http.setRequestHeader('Content-type', 'text/html; charset=iso-8859-1');
	http.send(null);

	if (http.readyState == 4) {
		return http.responseText;
	}
}