i1 = new Image;
i1.src = "images/rb1.gif";
i2 = new Image;
i2.src = "images/rb2.gif";
i3 = new Image;
i3.src = "images/rb3.gif";
i4 = new Image;
i4.src = "images/rb4.gif";
i5 = new Image;
i5.src = "images/rb5.gif";