function createXhrObject()
{
	var xhr=null;
	if (window.XMLHttpRequest) { 
		xhr = new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {
		xhr = new ActiveXObject("Microsoft.XMLHTTP");
	}
	return xhr;
}


function rechrefprop() {
	var params = "ref=" + document.getElementById("rechrefid").value;
	var newXhrObject = createXhrObject();
	newXhrObject.onreadystatechange = function() {
		if ((newXhrObject.readyState == 4) &&(newXhrObject.status == 200)) {
			document.getElementById('bloc_rechrefprop').innerHTML = newXhrObject.responseText;
		}
	};
	newXhrObject.open("POST", "rechref.php", true);
	newXhrObject.setRequestHeader('Content-Type','application/x-www-form-URLencoded');
	newXhrObject.setRequestHeader('Content-length', params.length);
	if(!document.all) newXhrObject.setRequestHeader('Connection', 'close');
	newXhrObject.send(params);
}


function rechref() {
	var el = document.getElementById("rechrefid");
	if (el.addEventListener){
		el.addEventListener('keyup', rechrefprop, false);
	} else if (el.attachEvent) {
		el.attachEvent('onkeyup', rechrefprop);
	}
};