function pokaz(id,id2)
{
if (id=='infra') myColor='#ffcc66'  ;
if (id=='oha') myColor='#00cc66'  ;
if (id=='eolo') myColor='#ffff99'  ;
if (id=='king') myColor='#cc3366'  ;
if (id=='scr') myColor='#00ccff'  ;
    document.getElementById(id).style.display = "block";
    document.getElementById(id2).style.background = "url(img/menu/"+id+".png) no-repeat bottom right "+myColor+"";
}
function ukryj(id,id2)
{
    document.getElementById(id).style.display = "none";
    document.getElementById(id2).style.background = "url(img/menu/"+id+".png) no-repeat bottom right";
}
function swapImg(id,image)
{
newsrc = "img/" + image;
document.getElementById(id).src = newsrc;
}