var xmlHttpLocal;
var valResult;
function fnHelp(){
	var ancho	= 770;
	var alto 	= 490;
	var x 		= (screen.width - ancho) / 2;
	var y 		= (screen.height - alto) / 2;		
	var strUrl  = "http://www.prominix.com/sblock/ayuda/";
	window.open(strUrl, "Help", "width="+ancho+",height="+alto+",top="+y+",left="+x+",toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1");
}
function GetXmlHttpObjectLocal(){
	var objXMLHttp = null
	if (window.XMLHttpRequest){
		objXMLHttp = new XMLHttpRequest()
	}
	else if (window.ActiveXObject){
		objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp
}
function fnValidate(Control,Message){
	if(document.all[Control].value==""){
		alert('El dato << ' + Message + ' >> es inválido.');return true;}else{return false;
	}
}
function fnActivateForm(){
	if (isObject(document.getElementById("txtUsuario"))){	
		document.all.txtUsuario.focus();
	}
}
function isObject(pObject){
	if (pObject!=null){
	if (typeof pObject != "undefined")
		return true;
	else
		return false;
	}
}
function fnEmail(email,sitem){
	var ancho 	= 500;
	var alto 	= 129;
	var x 		= (screen.width - ancho) / 2;
	var y 		= (screen.height - alto) / 2;		
	var strUrl  = "../../inc/mail.php?email="+email+"&sitem="+sitem;
	window.open(strUrl, "mail", "width=" + ancho + ",height=" + alto + ",top=" + y + ",left=" + x + ",toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0");
}
function isEmailAddress( theElement, nombre_del_elemento ){
	var s = theElement.value;
	var filter=/^[A-Za-z][A-Za-z0-9_]*@[A-Za-z0-9_]+\.[A-Za-z0-9_.]+[A-za-z]$/;
	if (s.length == 0 ) return true;
	if (filter.test(s))
		return true;
	else
		alert("La dirección de correo es inválida");
		theElement.focus();
	return false;
}