if (document.images) 
{

  var funstuff_btn_on = new Image();
  funstuff_btn_on.src = "img/menu/fun-stuff_on.jpg";
  var funstuff_btn_off = new Image();
  funstuff_btn_off.src = "img/menu/fun-stuff_out.jpg";

  var play_btn_on = new Image();
  play_btn_on.src = "img/menu/play_on.jpg";
  var play_btn_off = new Image();
  play_btn_off.src = "img/menu/play_out.jpg";

  var educationalcomicsdrawings_btn_on = new Image();
  educationalcomicsdrawings_btn_on.src = "img/menu/educational-comics-drawings_on.jpg";
  var educationalcomicsdrawings_btn_off = new Image();
  educationalcomicsdrawings_btn_off.src = "img/menu/educational-comics-drawings_out.jpg";

  var comics_btn_on = new Image();
  comics_btn_on.src = "img/menu/comics_on.jpg";
  var comics_btn_off = new Image();
  comics_btn_off.src = "img/menu/comics_out.jpg";
  
  var drawings_btn_on = new Image();
  drawings_btn_on.src = "img/menu/drawings_on.jpg";
  var drawings_btn_off = new Image();
  drawings_btn_off.src = "img/menu/drawings_out.jpg";
  
  var membership_btn_on = new Image();
  membership_btn_on.src = "img/menu/membership_on.jpg";
  var membership_btn_off = new Image();
  membership_btn_off.src = "img/menu/membership_out.jpg";
  
  var parents_btn_on = new Image();
  parents_btn_on.src = "img/menu/parents_on.jpg";
  var parents_btn_off = new Image();
  parents_btn_off.src = "img/menu/parents_out.jpg";
  
  var help_btn_on = new Image();
  help_btn_on.src = "img/menu/help_on.jpg";
  var help_btn_off = new Image();
  help_btn_off.src = "img/menu/help_out.jpg";
}


function mouseIn(boton) {
  if (document.images) {
    if (boton == 'funstuff_btn') {
      document.images[boton].src = funstuff_btn_on.src;
    }

    if (boton == 'play_btn') {
      document.images[boton].src = play_btn_on.src;
    }
	if (boton == 'educationalcomicsdrawings_btn') {
      document.images[boton].src = educationalcomicsdrawings_btn_on.src;
    }
	if (boton == 'comics_btn') {
      document.images[boton].src = comics_btn_on.src;
    }
	if (boton == 'drawings_btn') {
      document.images[boton].src = drawings_btn_on.src;
    }
	if (boton == 'membership_btn') {
      document.images[boton].src = membership_btn_on.src;
    }
	if (boton == 'parents_btn') {
      document.images[boton].src = parents_btn_on.src;
    }
	if (boton == 'help_btn') {
      document.images[boton].src = help_btn_on.src;
    }
  }
}


function mouseOut(boton) {
  if (document.images) {

    if (boton == 'funstuff_btn') {
      document.images[boton].src = funstuff_btn_off.src;
    }
    if (boton == 'play_btn') {
      document.images[boton].src = play_btn_off.src;
    }
	if (boton == 'educationalcomicsdrawings_btn') {
      document.images[boton].src = educationalcomicsdrawings_btn_off.src;
    }
	if (boton == 'comics_btn') {
      document.images[boton].src = comics_btn_off.src;
    }
	if (boton == 'drawings_btn') {
      document.images[boton].src = drawings_btn_off.src;
    }
	if (boton == 'membership_btn') {
      document.images[boton].src = membership_btn_off.src;
    }
	if (boton == 'parents_btn') {
      document.images[boton].src = parents_btn_off.src;
    }
	if (boton == 'help_btn') {
      document.images[boton].src = help_btn_off.src;
    }
  }
}