jQuery: Get query string variable

gistfile1.js

// Given a query string "?to=email&why=because&first=John&Last=smith"
// $.getUrlVar("to")  will return "email"
(function($){
	$.getUrlVar = function(key){
		var result = new RegExp(key + "=([^&]*)", "i").exec(window.location.search); 
		return result && unescape(result[1]) || ""; 
	};
})(jQuery);

JavaScript
// Given a query string "?to=email&why=because&first=John&Last=smith"
// getUrlVar("to") will return "email"
// getUrlVar("last") will return "smith"

Awesome tanks