image1 = new Image();
image1.src = "images/n_home1.gif";

image2 = new Image();
image2.src = "images/n_response1.gif";

image3 = new Image();
image3.src = "images/n_dialog1.gif";

image4 = new Image();
image4.src = "images/n_code1.gif";

image5 = new Image();
image5.src = "images/n_multimedia1.gif";

image6 = new Image();
image6.src = "images/n_info1.gif";