var menuOffX=0 //菜单距连接文字最左端距离
var menuOffY=20 //菜单距连接文字顶端距离
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
function ShowMenu(e,vmenu,mod){
which=vmenu
menuobj=document.getElementById("popmenu")
menuobj.thestyle=menuobj.style
menuobj.innerHTML=which
menuobj.contentwidth=menuobj.offsetWidth
eventX=e.clientX
eventY=e.clientY
var rightedge=document.body.clientWidth-eventX
var bottomedge=document.body.clientHeight-eventY
if (rightedge