function show_hide_div(div) {
    obj=document.getElementById(div);
    visible=(obj.style.display!="none")
    if (visible) {
        obj.style.display="none";
    } else {
        obj.style.display="block";
    }
}
function hide_show_div(div,top,left,width) {
    obj=document.getElementById(div);
    visible=(obj.style.display=="block")
    if (visible) {
        obj.style.display="none";
    } else {
        obj.style.display="block";
        obj.style.position="absolute";
        obj.style.top=top + "px";
        obj.style.left=left + "px";
        obj.style.width=width + "px";
        obj.style.filter="progid:DXImageTransform.Microsoft.Alpha(Opacity=90)";
    }
}