function init() {
if (TransMenu.isSupported()) {
	TransMenu.initialize();

	menu1.onactivate = function() { 
		document.getElementById("btn_whatson").className = "hover";
		changeImages('btn_whatson', 'btn_whatsonon'); 
		};
	menu1.ondeactivate = function() { 
		document.getElementById("btn_whatson").className = ""; 
		changeImages('btn_whatson', 'btn_whatsonoff');
		};
		
	}
}