function bild (b, h, url, windowtitle)
{
var tpop_bildschirmx = screen.availWidth;
var tpop_bildschirmy = screen.availHeight;
var tpop_breite = b;
var tpop_hoehe = h;
var tpop_startx = Math.round(tpop_bildschirmx / 2) - (tpop_breite / 2);
var tpop_starty = Math.round(tpop_bildschirmy / 2) - (tpop_hoehe / 2);
pic_popup = window.open('', '', "width="+ b + ", height=" + h
+ ", status=no, toolbar=no, menubar=no, resizable=yes, scrollbars=no, screenX=" + tpop_startx
+ ", left=" + tpop_startx + ", screenY=" + tpop_starty + ", top=" + tpop_starty + " ");
pic_popup.focus();
pic_popup.document.writeln(''+ decodeURI(windowtitle) + '');
pic_popup.document.writeln('')
pic_popup.document.writeln('
')
pic_popup.document.writeln('');
pic_popup.document.close();
return false;
}