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var getUrlParameter = function getUrlParameter(sParam) {
	var sPageURL = decodeURIComponent(window.location.search.substring(1)),
	sURLVariables = sPageURL.split('&'),sParameterName,i;

	for (i = 0; i < sURLVariables.length; i++) {
		sParameterName = sURLVariables[i].split('=');

		if (sParameterName[0] === sParam) {
			return sParameterName[1] === undefined ? true : sParameterName[1];
		}
	}
};