YAHOO.util.Event.addListener(window,'load',function(){
var tabs = YAHOO.util.Dom.getElementsByClassName('tabmenu','ul');
	if(!!tabs.length){
	   var tab = tabs[0].getElementsByTagName('li');
	   for(var i=0;i<tab.length;i++)
		{
			YAHOO.util.Event.addListener(tab[i],'click', toggleClass);
		}
	}
});
var toggleClass = function(e) { 
 		var tabs_content = YAHOO.util.Dom.getElementsByClassName("tab_content", "div");
		for(var i=0,el;el=tabs_content[i];i++){
			if(!YAHOO.util.Dom.hasClass(el,'hide')){
				YAHOO.util.Dom.addClass(el,'hide');
				break; 
			}	
		}
		var active_tab = YAHOO.util.Dom.getElementsByClassName("active", "li");
		YAHOO.util.Dom.removeClass(active_tab, 'active');
		YAHOO.util.Dom.addClass(this,'active');
		YAHOO.util.Dom.removeClass(YAHOO.util.Dom.getFirstChild(this).rel, 'hide');
		YAHOO.util.Event.stopEvent(e);
	};