Piece of javascript code: gets the service parameter rom the url (GET) and check if contains something

getUrlParamete.js

/*********************************/
/* by Sampel                     */
/*                               */
/* When users come to my portal  */
/* if they come to login, then   */
/* show the login. The only way  */
/* know if the user comes to log */
/* in is with the get parameter  */
/* service                       */
/*********************************/

$(function() {
	function getURLParameter(name) {
		return decodeURI( (RegExp(name + '=' + '(.+?)(&|$)').exec(location.search)||[,null])[1] );
		}

	if (getURLParameter("service").indexOf("spring_cas_security_check") > -1) {
		toogleLoginModal(); 
	}
});