function obr(cesta, title, sirka, vyska)
{ LeftPosition = (screen.width) ? (screen.width-sirka)/2 : 0;
TopPosition = (screen.height) ? (screen.height-vyska)/2 : 0;
settings = 'height='+vyska+',width='+sirka+',top='+TopPosition+',left='+LeftPosition+',scrollbars=no'+scroll+',resizable=no'
newWindow = window.open("","newWindow",settings );
newWindow.document.open();
newWindow.document.write(''+title+'');
newWindow.document.write('
');
newWindow.document.write('Okno zavřete kliknutím na obrázek');
newWindow.document.write('');
newWindow.document.close();
newWindow.focus();
}