function $G(Read_Id) { return document.getElementById(Read_Id) }
function Effect(ObjectId,parentId){
var Obj_Display = $G(ObjectId).style.display;
if (Obj_Display == 'none'){
Start(ObjectId,'Opens');
$G(parentId).innerHTML = "<a href=# onClick=javascript:Effect('"+ObjectId+"','"+parentId+"');><img src=style/all-.gif border=0></a>"
}else{
Start(ObjectId,'Close');
$G(parentId).innerHTML = "<a href=# onClick=javascript:Effect('"+ObjectId+"','"+parentId+"');><img src=style/all.gif border=0></a>"
}
}
function Start(ObjId,method){
var BoxHeight = $G(ObjId).offsetHeight;   			//获取对象高度
var MinHeight = 5;									//定义对象最小高度
var MaxHeight = 295;					 			//定义对象最大高度
var BoxAddMax = 1;									//递增量初始值
var Every_Add = 0.15;								//每次的递(减)增量  [数值越大速度越快]
var Reduce    = (BoxAddMax - Every_Add);
var Add       = (BoxAddMax + Every_Add);
//关闭动作**************************************
if (method == "Close"){
var Alter_Close = function(){						//构建一个虚拟的[递减]循环
BoxAddMax /= Reduce;
BoxHeight -= BoxAddMax;
if (BoxHeight <= MinHeight){
$G(ObjId).style.display = "none";
window.clearInterval(BoxAction);
}
else $G(ObjId).style.height = BoxHeight;
}
var BoxAction = window.setInterval(Alter_Close,1);
}
//打开动作**************************************
else if (method == "Opens"){
var Alter_Opens = function(){
BoxAddMax *= Add;
BoxHeight += BoxAddMax;
if (BoxHeight >= MaxHeight){
$G(ObjId).style.height = MaxHeight;
window.clearInterval(BoxAction);
}else{
$G(ObjId).style.display= "block";
$G(ObjId).style.height = BoxHeight;
}
}
var BoxAction = window.setInterval(Alter_Opens,1);
}
}
window.onload = function()
{
	setTimeout(countDown, 5000);
}
function countDown()
{
	//alert("123123");//在这里修改为菜单的收起事件
	Effect('test',"testtab");
}