JavaScript: Query String

querystring.js

var qs = (function(a) {
	if (a == "") return {};
	var b = {};
	for (var i = 0; i < a.length; ++i)
	{
		var p=a[i].split('=');
		if (p.length != 2) continue;
		b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
	}
	return b;
})(window.location.search.substr(1).split('&'));