Emv.Charts = {

	toggleOpen : function(element) {

		ulelement = element.parentNode;
		ulchildren = ulelement.getElementsByTagName('LI');
		for ( var i = 0; i < ulchildren.length; i++) {

			YAHOO.util.Dom.addClass(ulchildren[i], 'closed');
			YAHOO.util.Dom.removeClass(ulchildren[i], 'opened');
		}
		
		YAHOO.util.Dom.replaceClass(element,'closed', 'opened');
	}
}