var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
var ns4=document.layers

function showmenu(e,which)
{
 if (!document.all&&!document.getElementById&&!document.layers)
    return
 clearhidemenu()
 menuobj=ie4? document.all.popmenu : ns6? document.getElementById("popmenu") : ns4? document.popmenu : ""
 menuobj.thestyle=(ie4||ns6)? menuobj.style : menuobj
 if (ie4||ns6)
    menuobj.innerHTML=which
 else
 {
  menuobj.document.write('<layer name=gui bgColor=#999999 width=165 onmouseover="clearhidemenu()" onmouseout="hidemenu()">'+which+'</layer>')
  menuobj.document.close()
 }
 menuobj.contentwidth=(ie4||ns6)? menuobj.offsetWidth : menuobj.document.gui.document.width
 menuobj.contentheight=(ie4||ns6)? menuobj.offsetHeight : menuobj.document.gui.document.height
 eventX=ie4? event.clientX : ns6? e.clientX : e.x
 eventY=ie4? event.clientY : ns6? e.clientY : e.y

 //Find out how close the mouse is to the corner of the window
 var rightedge=ie4? document.body.clientWidth-eventX : window.innerWidth-eventX
 var bottomedge=ie4? document.body.clientHeight-eventY : window.innerHeight-eventY

 //if the horizontal distance isn't enough to accomodate the width of the context menu
 if (rightedge<menuobj.contentwidth)

 //move the horizontal position of the menu to the left by it's width
 menuobj.thestyle.left=ie4? document.body.scrollLeft+eventX-menuobj.contentwidth : ns6? window.pageXOffset+eventX-menuobj.contentwidth : eventX-menuobj.contentwidth
 else

 //position the horizontal position of the menu where the mouse was clicked
 menuobj.thestyle.left=ie4? document.body.scrollLeft+eventX : ns6? window.pageXOffset+eventX : eventX

 //same concept with the vertical position
 if (bottomedge<menuobj.contentheight)
 menuobj.thestyle.top=ie4? document.body.scrollTop+eventY-menuobj.contentheight : ns6? window.pageYOffset+eventY-menuobj.contentheight : eventY-menuobj.contentheight
 else
 menuobj.thestyle.top=ie4? document.body.scrollTop+event.clientY : ns6? window.pageYOffset+eventY : eventY
 menuobj.thestyle.visibility="visible"
 return false
}

function contains_ns6(a, b) {
//Determines if 1 element in contained in another- by Brainjar.com
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function hidemenu(){if (window.menuobj)menuobj.thestyle.visibility=(ie4||ns6)? "hidden" : "hide"}

function dynamichide(e){
if (ie4&&!menuobj.contains(e.toElement))
hidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
hidemenu()
}

function delayhidemenu(){
if (ie4||ns6||ns4)
delayhide=setTimeout("hidemenu()",500)
}

function clearhidemenu(){
if (window.delayhide)
clearTimeout(delayhide)
}

function highlightmenu(e,state)
{
 if (document.all)
   source_el=event.srcElement
 else if (document.getElementById)
   source_el=e.target
 if (source_el.className=="menuitems"){
   source_el.id=(state=="on")? "mouseoverstyle" : ""
 }
 else
 {
  while(source_el.id!="popmenu")
  {
   source_el=document.getElementById? source_el.parentNode : source_el.parentElement
   if (source_el.className=="menuitems"){
   source_el.id=(state=="on")? "mouseoverstyle" : ""
  }
 }
 }
 }
 if (ie4||ns6) document.onclick=hidemenu