j$ = jQuery.noConflict(true);

j$.fn.findParent = function (id) {
	var obj = j$(this);
	while (j$(obj)[0].tagName != "BODY") {
		if (j$(obj).parent().attr("id") == id) return j$(obj).parent();
		obj = j$(obj).parent();
	}
	return null;
};

j$.fn.findParentByClassName = function (className) {
	var obj = j$(this);
	while (j$(obj)[0].tagName != "BODY") {
		if (j$(obj).parent().hasClass(className)) return j$(obj).parent();
		obj = j$(obj).parent();
	}
	return null;
};

function get_cookie(cookie_name) {
	var results = document.cookie.match('(^|;) ?' + cookie_name + '=([^;]*)(;|$)');
	if (results)
		return (unescape(results[2]));
	else
		return "";
}

function isValidEmail(str) {
	var filter = /^.+@.+\..{2,3}$/
	if (filter.test(str))
		return (true);
	else
		return (false);
}



/* Client-side access to querystring name=value pairs
Version 1.3
28 May 2008
	
License (Simplified BSD):
http://adamv.com/dev/javascript/qslicense.txt
*/
function Querystring(qs) { // optionally pass a querystring to parse
	this.params = {};

	if (qs == null) qs = location.search.substring(1, location.search.length);
	if (qs.length == 0) return;

	// Turn <plus> back to <space>
	// See: http://www.w3.org/TR/REC-html40/interact/forms.html#h-17.13.4.1
	qs = qs.replace(/\+/g, ' ');
	var args = qs.split('&'); // parse out name/value pairs separated via &

	// split out each name=value pair
	for (var i = 0; i < args.length; i++) {
		var pair = args[i].split('=');
		var name = decodeURIComponent(pair[0]);

		var value = (pair.length == 2)
			? decodeURIComponent(pair[1])
			: name;

		this.params[name] = value;
	}
}

Querystring.prototype.get = function (key, default_) {
	var value = this.params[key];
	return (value != null) ? value : default_;
}

Querystring.prototype.contains = function (key) {
	var value = this.params[key];
	return (value != null);
}