// main menu

var oMenu;

YAHOO.util.Event.onContentReady("basicmenu", function () {
   
    oMenu = new YAHOO.widget.Menu("basicmenu", { preventcontextoverlap: false, context: ['popeventli','tl','bl'],constraintoviewport:false });
     
    oMenu.render();
    
    oMenu.hide();
            
});

function menu_show() {
	// make submenu visible
	oMenu.show();
}
function menu_hide() {
	// make submenu go away
	oMenu.hide();
}