function CreateDropShadow(targetID,dropShadowID)
{
    var dropEl = window.document.getElementById(dropShadowID);
    var el = window.document.getElementById(targetID);
    dropEl.style.height = el.offsetHeight + 'px';
}
function Hide(id)
{
    window.document.getElementById(id).style.display='none';
}
function Show(id,x,y)
{
    if(x != null && y != null)
    {
        window.document.getElementById(id).style.top=y+'px';
        window.document.getElementById(id).style.left=x+'px';
    }
    window.document.getElementById(id).style.display='';
}