var imgBuf=new Image();

imgBuf.src = "/public/layout/image/template/bg_menu_top.gif";

var imgBuf2=new Image();

imgBuf2.src = "/public/layout/image/template/bg_menu_top_top.png";
var imgBuf3=new Image();

imgBuf3.src = "/public/layout/image/template/bg_menu_top_bottom.gif";