var rollovers_count = 4;

var filenames_on = new Array;

filenames_on[0] = "o1.png";
filenames_on[1] = "o2.png";
filenames_on[2] = "o3.png";
filenames_on[3] = "o4.png";


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;
}