function grossbild(filename)
{
window.open (filename, 'newWin', 'scrollbars=no,status=no,menubar=no,directories=no,location=no,toolbar=no,width=640,height=480');
}

function optimize_q()
{
self.resizeTo(640,480);
self.focus();
}

function optimize_h()
{
self.resizeTo(480,640);
self.focus();
}