onmouseover='toggleshow(this)'
function toggleshow(object){
status=object.id;
status+= object.style.zIndex;

object=document.all[object.id+"SHOW"];
status+= object.id;
status+= object.style.zIndex;

if (object.style.visibility == "hidden"){
object.style.visibility="visible";
object.style.zIndex="100";
}

else {object.style.visibility = "hidden";
object.style.zIndex="1";
}

}