var n3 = false;
image1       = new Image();
image1.src   = "images/project_urge_tab.jpg";
image1on     = new Image();
image1on.src = "images/project_urge_tab-on.jpg"

image2       = new Image();
image2.src   = "images/paypal-button.png";
image2on     = new Image();
image2on.src = "images/paypal-button-on.png"

image3       = new Image();
image3.src   = "images/book_left.jpg";
image3on     = new Image();
image3on.src = "images/book_left-on.jpg"


function on3(name)
{
    document[name].src = eval(name + "on.src");
}

function off3(name)
{
    document[name].src = eval(name + ".src");
}

n3 = true;
function on(name)
{
   if (n3)
      on3(name);
}

function off(name)
{
   if (n3)
      off3(name);
}