var butt01o=new Image();
var butt01p=new Image();
var butt02o=new Image();
var butt02p=new Image();
var butt03o=new Image();
var butt03p=new Image();
var butt04o=new Image();
var butt04p=new Image();
var butt05o=new Image();
var butt05p=new Image();


function NavPic() {
  butt01o.src="intro/butt01o.jpg";
  butt01p.src="intro/butt01p.jpg";
  butt02o.src="intro/butt02o.jpg";
  butt02p.src="intro/butt02p.jpg";
  butt03o.src="intro/butt03o.jpg";
  butt03p.src="intro/butt03p.jpg";
  butt04o.src="intro/butt04o.jpg";
  butt04p.src="intro/butt04p.jpg";
  butt05o.src="intro/butt05o.jpg";
  butt05p.src="intro/butt05p.jpg";
}


function blPic(item,action) {
  if (action) {
    document.images["butt"+item].src="intro/butt"+item+"o.jpg";
  }
  else {
    document.images["butt"+item].src="intro/butt"+item+"p.jpg";
  }
	return true;
}