var sirka = screen.width;

if ((sirka > 800) && (sirka < 1025))
{
document.write("</td><td>&nbsp;</table>");
}
else if ((sirka > 1024) && (sirka < 1153))
{
document.write("</td><td class='bunka_bocnice_1150_1024'>&nbsp;</td></tr></table>");
}
else if ((sirka > 1052) && (sirka < 1281))
{
document.write("</td><td class='bunka_bocnice_1280_1024'>&nbsp;</td></tr></table>");
}
else if (sirka > 1280)
{
document.write("</td><td class='bunka_bocnice_infinity_1024'>&nbsp;</td></tr></table>");
}
else
{
document.write("</td></tr></table>");
}