function showcasePopUp(mylink, windowname, h, w) {
    var mywin, href;

    if (typeof (mylink) == 'string')
      href = mylink;
    else
      href = mylink.href;
    mywin = window.open(href, windowname, 'width=' + w + ',height=' + h + ',scrollbars=no,status=no,menubar=no,toolbar=no,resizable=no');
    mywin.innerHeight = h;
    mywin.innerWidth = w;
    mywin.resizeTo(w, h);
    mywin.focus();

    return false;
}