var def=new Image;
def.src='/img_az/nadpisi.gif';
var def_pic=new Image;
def_pic.src='/img_az/basic_pic.jpg';
var def_kus=new Image;
def_kus.src='/img_az/default.gif';

var gal=new Image;
gal.src='/img_az/gallery.gif';
var gal_pic=new Image;
gal_pic.src='/img_az/gallery_pic.jpg';
var gal_kus=new Image;
gal_kus.src='/img_az/gallery_kusok.gif';

var abo=new Image;
abo.src='/img_az/about.gif';
var abo_pic=new Image;
abo_pic.src='/img_az/about_pic.jpg';

var tec=new Image;
tec.src='/img_az/technics.gif';
var tec_pic=new Image;
tec_pic.src='/img_az/technics_pic.jpg';

var fil=new Image;
fil.src='/img_az/film.gif';
var fil_pic=new Image;
fil_pic.src='/img_az/film_pic.jpg';

var con=new Image;
con.src='/img_az/contact.gif';
var con_pic=new Image;
con_pic.src='/img_az/basic_pic.jpg';

function onMenu(Id,Id2,Id3) {
document.all.text.src=eval(Id+'.src');
document.all.pics.src=eval(Id2+'.src');
document.all.kusok.src=eval(Id3+'.src');
}

function offMenu() {
document.all.text.src=def.src;
document.all.pics.src=def_pic.src;
document.all.kusok.src=def_kus.src;
}