作者：puterjam 时间：2004-4-28 文档类型：原创 来自：蓝色理想
具体效果：
var listnum=0;
var menu_height;
var menu_width;
var menu_left;
var menu_top;
var topMar = 1;
var leftMar = -2;
var space = 1;
var isvisible;
function listbox(listname,buttonname,valuename)
{
this.listname=listname
this.buttonname=buttonname
this.valuename=valuename
}
function listaction(obj,action,showlist,scroll,tw)
{
num=obj.id.charAt(obj.id.length-1)
if (!scroll) {scroll=0}
if (!tw) {tw=105}
listbox=eval(lb[num].listname)
listbutton=eval(lb[num].buttonname)
listvalue=eval(lb[num].valuename)
switch (action)
{
case 0:
listbox.className="getlist";listbutton.className="listover"
break;
case 1:
if (listbox.gf=="0")
{listbox.className="lostlist";listbutton.className="menubar"}
break;
case 2:
for (i=0;i parseInt(vDiv.style.left)+vDiv.offsetWidth) ||
(mY < parseInt(vDiv.style.top)-menu_height) || (mY > parseInt(vDiv.style.top)+vDiv.offsetHeight)) {
vDiv.style.visibility = "hidden";
isvisible = false;
}
}
if (isvisible==false)
{
for (i=0;i
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