function on(oblast)
{
    oblast.style.backgroundColor='#DBEBFF';
}
function off(oblast)
{
    oblast.style.backgroundColor='#E9F0F8';
}
function okno(adresa)
{
    window.open(adresa,'fotka','width=660,height=480,locationbar=no,resizable=yes,status=yes,menubar=yes,scrollbars=yes');
}
function okno_stat(adresa)
{
    window.open(adresa, 'width=800,height=600,locationbar=no,resizable=yes,status=yes,menubar=yes,scrollbars=yes');
}
function zebricek(adresa)
{
    window.open(adresa,'zebricek','width=800,height=600,menubar=1,scrollbars=1,resizable=1');
}