if( typeof rollover_nav != 'function'){
	function rollover_nav(e){if(navigator.userAgent.match('MSIE')){var e=$(e)};e=e.down();var r=new RegExp('_(on|off|hover).(gif|png|jpg)$');var m=e.src.match(r);if(m){var n;switch(m[1]){case 'off':n='hover';break;case 'hover':n='off';break;}if(n){e.src=e.src.replace(r,'_'+n+'.gif');}}}
}
function rollover_nav_on(e){
	if(navigator.userAgent.match('MSIE')){var e=$(e)};
	e=e.down();
	var r=new RegExp('_(on|off|hover).(gif|png|jpg)$');
	var m=e.src.match(r);
	if(m){
		var n;
		switch(m[1]){case 'off':n='on';break;case 'hover':n='on';break;}
		if(n){e.src=e.src.replace(r,'_'+n+'.gif');}
	}
	}
	
function rollover_nav_off(e){
	if(navigator.userAgent.match('MSIE')){var e=$(e)};
	e=e.down();
	var r=new RegExp('_(on|off|hover).(gif|png|jpg)$');
	var m=e.src.match(r);
	if(m){
		var n;
		switch(m[1]){case 'on':n='off';break;case 'hover':n='off';break;}if(n){e.src=e.src.replace(r,'_'+n+'.gif');}}}

	function turnOn(id) {
		$(id).src = "/education/__shared/templates/web_images/navigation"+ "/" + id + "_on.png";
		e = $(id);
		dropdownOn(id);
	}

	function turnOff(id) {
		$(id).src = "/education/__shared/templates/web_images/navigation" + "/" + id + "_off.png";
		dropdownOff(id);
	}