function rhwinfocus()
{
 var thiswin = window.open('', 'rhwin');
 top.focus();
 thiswin.focus();
}

// Auswahl für Select-Boxen zur Content-Navigation
function auswahl()
{
 var index = window.document.tickform.wahl.selectedIndex;
 var ziel = window.document.tickform.wahl.options[index].value;
 window.location.href=ziel;
}

// Firefox Homepage aufrufen
function openfirebird()
{
 var thiswin = window.open("http://firefox.stw.uni-duisburg.de/", "rhwin", "top=175,left=188,width=615,height=400,toolbar=no,location=yes,menubar=no,scrollbars=yes,resizable=yes");
}

// Popup-Fenster öffnen
function ImgPopup(Image)
{
 var thiswin = window.open('show_imgpopup.php?image=' + Image, 'imgwin', 'resizable=yes,scrollbars=no,toolbar=no,menubar=no,top=20,left=20');
 thiswin.focus();
}

// Seite drucken
function printpage()
{
 var thiswin = window.open('modules/print.php?print_url=' + self.location.href, 'printwin', 'width=700,height=600,menubar=no,status=no,toolbar=no,scrollbars=yes,dependent=yes');
 top.focus();
 thiswin.focus();
}