function setSize() {
background.height=(window.innerHeight)?window.innerHeight: ((document.all)?document.body.offsetHeight:null)-160;
background.width=1;
}
function okno_un(loc,myWidth,myHeight)  { 
    lev= (screen.width *0.5)-(myWidth*0.5);
    verh=50;
    window.open(loc, 'podr','width='+myWidth+',height='+myHeight+',top='+verh+',left='+lev+',scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no');           
}