function ChequearInputLogin() {
	
	if(document.getElementById('user')) {
		if(document.getElementById('user').value == "Usuario"){
			document.getElementById('user').value = "";
		}
	}

	if(document.getElementById('pass')) {
		if(document.getElementById('pass').value == "*****"){
			document.getElementById('pass').value = "";
		}
	}
}

/*** BEGIN AGREGO LOS EVENTOS DE FORMA NO INTRUSIVA ****/
function addEvent(obj, evType, fn){
 if (obj.addEventListener){
   obj.addEventListener(evType, fn, false);
   return true;
 } else if (obj.attachEvent){
   var r = obj.attachEvent("on"+evType, fn);
   return r;
 } else {
   return false;
 }
}

addEvent(window, 'load', ChequearInputLogin);
/*** END AGREGO LOS EVENTOS DE FORMA NO INTRUSIVA ****/