function isValidUrl(url) {
	var regUrl = /^(http[s]?:\/\/|http:\/\/www.|https:\/\/www.|ftp:\/\/www.|www.){1}([a-zA-Z0-9\-]+)(\.[a-zA-Z]+){1,2}$/;
	return regUrl.test($.trim(url));
}

function isdefined(v) {
	return (typeof(window[v]) != "undefined");
}

function debug(information) {
	if (window.console) {
		console.info(information);
	} else {
		alert(information);
	}
}