if(navigator.appVersion.charAt(0) >=3) {
  img = new Array();

  img[10] = new Image();  img[10].src = "topimg/pro1.gif";
  img[20] = new Image();  img[20].src = "topimg/btg1.gif";
  img[30] = new Image();  img[30].src = "topimg/pkabe1.gif";
  img[40] = new Image();  img[40].src = "topimg/sfc1.gif";
  img[50] = new Image();  img[50].src = "topimg/ods1.gif";
  img[11] = new Image();  img[11].src = "topimg/pro2.gif";
  img[21] = new Image();  img[21].src = "topimg/btg2.gif";
  img[31] = new Image();  img[31].src = "topimg/pkabe2.gif";
  img[41] = new Image();  img[41].src = "topimg/sfc2.gif";
  img[51] = new Image();  img[51].src = "topimg/ods2.gif";

}

function _in(nam,num) {
  if(navigator.appVersion.charAt(0) >=3) {
  document.images[nam].src = img[num].src;
  }
}
function _out(nam,num) {
  document.images[nam].src = img[num].src;
}