menu1on=new Image;
menu1on.src="images/elements/menu_fooldal_on.gif";
menu1off=new Image;
menu1off.src="images/elements/menu_fooldal.gif";

menu2on=new Image;
menu2on.src="images/elements/menu_linkek_on.gif";
menu2off=new Image;
menu2off.src="images/elements/menu_linkek.gif";

menu3on=new Image;
menu3on.src="images/elements/menu_visszajelzes_on.gif";
menu3off=new Image;
menu3off.src="images/elements/menu_visszajelzes.gif";

function img_act(imgName)
{
    imgOn = eval(imgName + "on.src");
    document [imgName].src = imgOn;
}
function img_inact(imgName)
{
    imgOff = eval(imgName + "off.src");
    document [imgName].src = imgOff;
}