function dropmenu_init() {
	$$('#navmenu ul').each(function(f){
		f.hide()
		f.parentNode.onmouseover = function() { f.show() }
		f.parentNode.onmouseout = function() { f.hide() }		
	})
}

if (window.onload != '') before_menu_load = window.onload
window.onload = function() {
	if(before_menu_load) before_menu_load()
	dropmenu_init()
}