function OtevriReferenci(obrazek)
{
var w = screen.availWidth;
var h = screen.availHeight;
var popW = 410, popH = 335;
var leftPos = (w-popW)/2, topPos = (h-popH)/2;
my_window=window.open("","reference",'menubar=no,scrollbars=no,resizable=no,width=' + popW + ',height=' + popH + ',top=' + topPos + ',left=' + leftPos);
my_window.document.write('Ukázka grafického návrhu
');
}