var l_fenster=null;
// Funktionsdefinitionen fuer scrollbars im popup
function openPopup(breite,hoehe,URL,targetname,xPos,yPos){ 
//oeffnet ein Javascript Popup
if (l_fenster != null) {
	 if (!l_fenster.closed) l_fenster.close();
	 }

	if(xPos != null && yPos != null){
		l_fenster = window.open(URL,targetname,"width="+breite+",height="+hoehe+",screenX="+xPos+",screenY="+yPos+",left="+xPos+",top="+yPos+",resizable=no,titlebar=no,scrollbars=yes");
	}
	else{
		l_fenster = window.open(URL,targetname,"width="+breite+",height="+hoehe+",resizable=no,titlebar=no,scrollbars=yes");
	}
}


// back and close
function showPage(page) {
  opener.location.href=page;
  self.window.close();
}