模似windows XP 左侧的菜单效果(2)

<script language="javascript">

var TIMER_SLIDE = null;
var OBJ_SLIDE;
var OBJ_VIEW;
var PIX_SLIDE = 10; //this is the amount of slide/DELAY_SLIDE
var NEW_PIX_VAL;
var DELAY_SLIDE = 30; //this is the time between each call to slide
var DIV_HEIGHT = 22; //value irrelevant
var SUB_MENU_NUM =0;
var RE_INIT_OBJ = null;
var bMenu = document.getElementById("curMenu");
var MainDiv,SubDiv

//DD added code
document.write('<div id="tempcontainer" class="mainDiv" style="visibility: hidden; position: absolute"></div>')

function Init(objDiv)
{
if (TIMER_SLIDE == null)
{
  SUB_MENU_NUM = 0;
  MainDiv = objDiv.parentNode;
  SubDiv =  MainDiv.getElementsByTagName("DIV").item(0);
  SubDiv.onclick = SetSlide;
 
  OBJ_SLIDE = MainDiv.getElementsByTagName("DIV").item(1)
  OBJ_VIEW = OBJ_SLIDE.getElementsByTagName("DIV").item(0);

document.getElementById("tempcontainer").innerHTML=MainDiv.getElementsByTagName("DIV").item(2).innerHTML //DD added code
 DIV_HEIGHT=document.getElementById("tempcontainer").offsetHeight //DD added code
 
  for (i=0;i<OBJ_VIEW.childNodes.length;i++)
  {
   if (OBJ_VIEW.childNodes.item(i).tagName == "SPAN")
   {
SUB_MENU_NUM ++;
OBJ_VIEW.childNodes.item(i).onmouseover= ChangeStyle;
OBJ_VIEW.childNodes.item(i).onmouseout= ChangeStyle;
   }
  }  
 
  NEW_PIX_VAL = parseInt(MainDiv.getAttribute("state"));
}

}
function SetSlide()
{  
if (window.TIMER_SLIDE) clearInterval(TIMER_SLIDE) //DD added code
   if (TIMER_SLIDE == null && this.parentNode == MainDiv)
   TIMER_SLIDE = setInterval('RunSlide()', DELAY_SLIDE);
   else
   {
RE_INIT_OBJ = this;
setTimeout('ReInit()', 200);
   }
}

function ReInit(obj)
{
Init(RE_INIT_OBJ);
TIMER_SLIDE = setInterval('RunSlide()', DELAY_SLIDE);
RE_INIT_OBJ = null;
}

function RunSlide()
{

if (OBJ_VIEW.getAttribute("state") == 0)
{

NEW_PIX_VAL += PIX_SLIDE;
  OBJ_SLIDE.style.height = NEW_PIX_VAL;

if (NEW_PIX_VAL >= DIV_HEIGHT) //DD modified code
  {
   clearInterval(TIMER_SLIDE);
   TIMER_SLIDE = null;
   OBJ_VIEW.style.display = 'inline';
   OBJ_VIEW.setAttribute("state","1")
   MainDiv.setAttribute("state",NEW_PIX_VAL);
  }
} else
{
  OBJ_VIEW.style.display = 'none';
  NEW_PIX_VAL -= PIX_SLIDE;
  if(NEW_PIX_VAL > 0)OBJ_SLIDE.style.height = NEW_PIX_VAL;
  if (NEW_PIX_VAL <= 0)
  {
   NEW_PIX_VAL = 0;
   OBJ_SLIDE.style.height = NEW_PIX_VAL
   clearInterval(TIMER_SLIDE);
   TIMER_SLIDE = null;
   OBJ_VIEW.setAttribute("state","0")
   MainDiv.setAttribute("state",NEW_PIX_VAL);
  }
}
}