function getParameterByName(name)
{
	var match = RegExp('[?&]' + name + '=([^&]*)').exec(window.location.search);
	return match && decodeURIComponent(match[1].replace(/\+/g, ' '));
}

function guid()
{
	function s4()
	{
		return Math.floor((1 + Math.random()) * 0x10000)
			.toString(16)
			.substring(1);
	}

	return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
}