home_on = new Image(175,25);
home_on.src="Graphics/bn_home_2.GIF";
home_off = new Image(100,25);
home_off.src="Graphics/bn_home_1.GIF";

contact_on = new Image(175,25);
contact_on.src="Graphics/bn_contact_2.GIF";
contact_off = new Image(175,25);
contact_off.src="Graphics/bn_contact_1.GIF";

vacc_on = new Image(175,25);
vacc_on.src="Graphics/bn_vacc_2.GIF";
vacc_off = new Image(175,25);
vacc_off.src="Graphics/bn_vacc_1.GIF";

prices_on = new Image(175,25);
prices_on.src="Graphics/bn_prices_2.GIF";
prices_off = new Image(175,25);
prices_off.src="Graphics/bn_prices_1.GIF";

about_on = new Image(175,25);
about_on.src="Graphics/bn_about_2.GIF";
about_off = new Image(175,25);
about_off.src="Graphics/bn_about_1.GIF";





function over_image(parm_name)
    {
        document[parm_name].src = eval(parm_name + "_on.src");
    }
function off_image(parm_name)
    {
        document[parm_name].src = eval(parm_name + "_off.src");
    }