var rollovers_count = 12;
var filenames_on = new Array;

filenames_on[0] = "gfx/sg_on.jpg";
filenames_on[1] = "gfx/dt_on.jpg";
filenames_on[2] = "gfx/z_on.jpg";
filenames_on[3] = "gfx/w_on.jpg";
filenames_on[4] = "gfx/s_on.jpg";
filenames_on[5] = "gfx/k_on.jpg";
filenames_on[6] = "gfx/sg.jpg";
filenames_on[7] = "gfx/dt.jpg";
filenames_on[8] = "gfx/z.jpg";
filenames_on[9] = "gfx/w.jpg";
filenames_on[10] = "gfx/s.jpg";
filenames_on[11] = "gfx/k.jpg";

var images_on  = new Array;
var images_loaded = false;

function preload()
{
    for (i = 0; i < rollovers_count; i++) {
        images_on[i] = new Image();
        images_on[i].src = filenames_on[i];
    }
    images_loaded = true;
}