getQuerystring.js

// modified version of http://www.guffa.com/Programming_archive.aspx?id=16
var getQuerystring = function (key, from){
	var re = new RegExp('(?:\\?|&)'+key+'=(.*?)(?=&|$)','gi')
		, r = []
		, m
		;

	while ((m=re.exec(from)) != null) r.push(m[1]);

	return (r.join(',') || '').replace('/','');
}