function bild(xsize,ysize,picture)
{
    xp = (screen.width-xsize) / 2;
    yp = (screen.availHeight-ysize) / 2 - 30;
    
    site = "bild.htm?bild="+picture;
    winstr = "directories=0,location=0,menubar=0,resizable=0,scrollbars=0,status=0,toolbar=0,width="+xsize+",height="+ysize+",left="+xp+",top="+yp;
    WinBild = window.open(site, "", winstr);    
}

/* Zentriertes Popup */


// <![CDATA[
function PopUp(w,h,ziel) {
  h = h - 20; var x=0, y=0, parameter="";
  if (w < screen.availWidth || h < screen.availHeight) {
    x = (screen.availWidth - w - 12) / 2;
    y = (screen.availHeight - h - 104) / 2;
    if (window.opera) y = 0; // Opera positioniert unter den Symbolleisten
    if (x<0 || y<0) { x=0; y=0; }
    else parameter = "width=" + w + ",height=" + h + ",";
  }
  parameter += "left=" + x + ",top=" + y;
  parameter += ",menubar=no,location=no,toolbar=no,status=no";
  parameter += ",resizable=no,scrollbars=yes";
  var Fenster = window.open(ziel,"PopUp",parameter);
  if (Fenster) Fenster.focus();
  return !Fenster;
}
// ]]>