function preload_images()
{        
        var image_array = new Array();
        var path = '/images/';

        image_array[0] = path + "home-rollover.jpg";
        image_array[1] = path + "about-rollover.jpg";
        image_array[2] = path + "features-rollover.jpg";
        image_array[3] = path + "contact-rollover.jpg";
        image_array[4] = path + "try-it-button-rollover.jpg";
        image_array[5] = path + "buy-it-button-rollover.jpg";


        var preload_image = new Array ();
        for(var i=0; i<image_array.length; i++)
        {
            preload_image[i]= new Image();
            preload_image[i].src = image_array[i];
        }
}
        
        
function rollover(name, filename)
{
    var fullpath = '/images/' + filename;
    document.images[name].src = fullpath;
}