function updownshadow()
{
 if (event.srcElement.className=="popshadow")
 {
  tempobject=event.srcElement
  if (event.type=="mousedown")
   {
    tempobject.filters[0].enabled=false
    tempobject.style.left=tempobject.style.top=0
   }
  else
  {
   tempobject.filters[0].enabled=true
   tempobject.style.left=tempobject.style.top=-5
  }
 }
}

 if (document.all){
 document.body.onmousedown=updownshadow
 document.body.onmouseup=updownshadow

}