// JavaScript Document
/* 
	Fasast js/menu.js
	Coryright By 谢振哲 @2009.04 Fuzhou University 
*/
function menu_ext(obj)
{
    var extid=obj.id+'_ext';
    document.getElementById(extid).style.display="block";
}
function menu_unext(obj)
{
    var unextid=obj.id+'_ext';
    document.getElementById(unextid).style.display="none";
}