menu1on=new Image;
menu1on.src="images/menu_csillag1.gif";
menu1off=new Image;
menu1off.src="images/menu_csillag.gif";

menu2on=new Image;
menu2on.src="images/menu_irasok1.gif";
menu2off=new Image;
menu2off.src="images/menu_irasok.gif";

menu3on=new Image;
menu3on.src="images/menu_tanacs1.gif";
menu3off=new Image;
menu3off.src="images/menu_tanacs.gif";

menu4on=new Image;
menu4on.src="images/menu_tanfolyam1.gif";
menu4off=new Image;
menu4off.src="images/menu_tanfolyam.gif";

menu5on=new Image;
menu5on.src="images/menu_rendezveny1.gif";
menu5off=new Image;
menu5off.src="images/menu_rendezveny.gif";

menu6on=new Image;
menu6on.src="images/menu_elerhetoseg1.gif";
menu6off=new Image;
menu6off.src="images/menu_elerhetoseg.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;
}

function objekt(n, d) { 
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=objekt(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function layer() { 
  var i,p,v,obj,args=layer.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=objekt(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}