var menu_img = new Array(16);

// main menu images
menu_img[0]  = load_image( 'images/menu/newmachines.gif' );
menu_img[1]  = load_image( 'images/menu/newmachines_on.gif'  );
menu_img[2]  = load_image( 'images/menu/usedmachines.gif' );
menu_img[3]  = load_image( 'images/menu/usedmachines_on.gif'  );
menu_img[4]  = load_image( 'images/menu/newpowertools.gif' );
menu_img[5]  = load_image( 'images/menu/newpowertools_on.gif'  );
menu_img[6]  = load_image( 'images/menu/usedpowertools.gif' );
menu_img[7]  = load_image( 'images/menu/usedpowertools_on.gif'  );
menu_img[8]  = load_image( 'images/menu/handtools.gif' );
menu_img[9]  = load_image( 'images/menu/handtools_on.gif'  );
menu_img[10] = load_image( 'images/menu/antiquetools.gif' );
menu_img[11] = load_image( 'images/menu/antiquetools_on.gif'  );
menu_img[12] = load_image( 'images/menu/accessories.gif' );
menu_img[13] = load_image( 'images/menu/accessories_on.gif'  );
menu_img[14] = load_image( 'images/menu/specials.gif' );
menu_img[15] = load_image( 'images/menu/specials_on.gif'  );
menu_img[16] = load_image( 'images/menu/books.gif' );
menu_img[17] = load_image( 'images/menu/books_on.gif'  );
menu_img[18] = load_image( 'images/menu/viewcart.gif' );
menu_img[19] = load_image( 'images/menu/viewcart_on.gif'  );
menu_img[20] = load_image( 'images/menu/checkout.gif' );
menu_img[21] = load_image( 'images/menu/checkout_on.gif'  );

function load_image( src )
{
    var img = new Image();
    img.src = src;
    return img;
};


function menu_on(m)
{
    switch(m)
    {
      case '1':
        document.menu_1.src = menu_img[1].src;
        setStatus('New Machines');
        break;

      case '2':
        document.menu_2.src = menu_img[3].src;
        setStatus('Used Machines');
        break;

      case '3':
        document.menu_3.src = menu_img[5].src;
        setStatus('New Power Tools');
        break;

      case '4':
        document.menu_4.src = menu_img[7].src;
        setStatus('Used Power Tools');
        break;

      case '5':
        document.menu_5.src = menu_img[9].src;
        setStatus('Hand Tools');
        break;

      case '6':
        document.menu_6.src = menu_img[11].src;
        setStatus('Antique Tools');
        break;

      case '7':
        document.menu_7.src = menu_img[13].src;
        setStatus('Accessories');
        break;

      case '8':
        document.menu_8.src = menu_img[15].src;
        setStatus('Specials');
        break;

      case '9':
        document.menu_9.src = menu_img[17].src;
        setStatus('Books');
        break;

      case '10':
        document.menu_10.src = menu_img[19].src;
        setStatus('View Your Shopping Cart');
        break;

      case '11':
        document.menu_11.src = menu_img[21].src;
        setStatus('Checkout');
        break;

    };

    return true;
};

function menu_off(m)
{
    switch(m)
    {
      case '1':
        document.menu_1.src = menu_img[0].src;
        setStatus('');
        break;

      case '2':
        document.menu_2.src = menu_img[2].src;
        setStatus('');
        break;

      case '3':
        document.menu_3.src = menu_img[4].src;
        setStatus('');
        break;

      case '4':
        document.menu_4.src = menu_img[6].src;
        setStatus('');
        break;

      case '5':
        document.menu_5.src = menu_img[8].src;
        setStatus('');
        break;

      case '6':
        document.menu_6.src = menu_img[10].src;
        setStatus('');
        break;

      case '7':
        document.menu_7.src = menu_img[12].src;
        setStatus('');
        break;


      case '8':
        document.menu_8.src = menu_img[14].src;
        setStatus('');
        break;

      case '9':
        document.menu_9.src = menu_img[16].src;
        setStatus('');
        break;

      case '10':
        document.menu_10.src = menu_img[18].src;
        setStatus('');
        break;

      case '11':
        document.menu_11.src = menu_img[20].src;
        setStatus('');
        break;
    };

    return true;
};