var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
var isMozilla=isDOM && navigator.appName=="Netscape";

var MenuNum=1;
var OverMenu=new Array(MenuNum);

function getRef(id) {
if (isDOM) return document.getElementById(id);
if (isIE4) return document.all[id];
if (isNS4) return document.layers[id];
}

function Show(id)
{
 if(isNS4) pos=window.innerWidth/2;
 if(isDOM) pos=document.body.clientWidth/2;
 for(i=1;i<=MenuNum;i++)
 {
  if(i==id)
  {
    OverMenu[id]=true;
    a=getRef("m_"+id);
    a.style.right=pos+80;
    a.style.visibility="visible";
    a.style.display="block";
  }
  else
  {
    Hide(i);
  }
 }
}

function Hide(id)
{
  a=getRef("m_"+id);
  a.style.display="none";
  a.style.visibility="hidden";
  OverMenu[id]=false;
}

function DelayHide(id)
{
  if(!OverMenu[id])
  {
    Hide(id);
  }
  else setTimeout('DelayHide('+id+')',10);
}