function pokaz (id_obiect)
{
var domvs;domvs=document.getElementById(id_obiect).style;
if (domvs.display == 'block') domvs.display='none';    else domvs.display='block';
}

function displayWindow(url, width, height) {
        var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=no,menubar=no' );
}