Get URL arguments using Javascript - $_GET Variables

if (location.search != "")
{
	var x = location.search.substr(1).split(";")
	for (var i=0; i<x.length; i++)
	{
		var y = x[i].split("=");
		alert("Key '" + y[0] + "' has the content '" + y[1]+"'")
	}
}