function vkl()
{
document.getElementById('pdmenu').style.display='block';
document.getElementById('pdmenu1').style.display='block';
}
function winop(url, w, h)
{
window.open("img/"+url, "tex", "width="+w+",height="+h+",titlebar=no,toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=yes,scrollbars=no,top=30,left=30");
}