new Image().src = "images/navi_b1_2.gif";
new Image().src = "images/navi_b2_2.jpg";
new Image().src = "images/navi_b3_2.jpg";
new Image().src = "images/navi_b4_2.jpg";
new Image().src = "images/navi_b5_2.jpg";
new Image().src = "images/top_navi_b1_2.jpg";
new Image().src = "images/top_navi_b2_2.jpg";
new Image().src = "images/top_navi_b3_2.jpg";
new Image().src = "images/top_navi_b4_2.jpg";
new Image().src = "images/top_navi_b5_2.jpg";
new Image().src = "images/bn_main_1_2.jpg";
new Image().src = "images/bn_main_2_2.jpg";
new Image().src = "images/bn_main_3_2.jpg";
new Image().src = "images/bn_main_4_2.jpg";
new Image().src = "images/bn_main_5_2.jpg";