image1 = new Image();
image1.src = "/images/buttons/advantages_off.gif";
image1on = new Image();
image1on.src = "/images/buttons/advantages_on.gif";

image2 = new Image();
image2.src = "/images/buttons/application_off.gif";
image2on = new Image();
image2on.src = "/images/buttons/application_on.gif";

image3 = new Image();
image3.src = "/images/buttons/research_off.gif";
image3on = new Image();
image3on.src = "/images/buttons/research_on.gif";

image4 = new Image();
image4.src = "/images/buttons/history_off.gif";
image4on = new Image();
image4on.src = "/images/buttons/history_on.gif";

image5 = new Image();
image5.src = "/images/buttons/links_off.gif";
image5on = new Image();
image5on.src = "/images/buttons/links_on.gif";

image6 = new Image();
image6.src = "/images/buttons/about_off.gif";
image6on = new Image();
image6on.src = "/images/buttons/about_on.gif";

image7 = new Image();
image7.src = "/images/buttons/contact_off.gif";
image7on = new Image();
image7on.src = "/images/buttons/contact_on.gif";



function on(name)   {
    document[name].src = eval(name + "on.src");
}

function off(name)  {
    document[name].src = eval(name + ".src");
}