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=3;
}
else{
tempobject.filters[0].enabled=true;
tempobject.style.left=tempobject.style.top=2;
}
}
}

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