if(document.images) {
 var imgs = new Array();
 imgs[0] = new Image();  imgs[0].src = "../image/bottom01_off.gif"; 
 imgs[1] = new Image();  imgs[1].src = "../image/bottom01_on.gif";
 imgs[2] = new Image();  imgs[2].src = "../image/bottom02_off.gif";
 imgs[3] = new Image();  imgs[3].src = "../image/bottom02_on.gif";
 imgs[4] = new Image();  imgs[4].src = "../image/bottom03_off.gif"; 
 imgs[5] = new Image();  imgs[5].src = "../image/bottom03_on.gif";
 imgs[6] = new Image();  imgs[6].src = "../image/bottom04_off.gif";
 imgs[7] = new Image();  imgs[7].src = "../image/bottom04_on.gif";
 imgs[8] = new Image();  imgs[8].src = "../image/bottom05_off.gif";
 imgs[9] = new Image();  imgs[9].src = "../image/bottom05_on.gif";
 imgs[10] = new Image(); imgs[10].src = "../image/bottom06_off.gif"; 
 imgs[11] = new Image(); imgs[11].src = "../image/bottom06_on.gif";
 imgs[12] = new Image(); imgs[12].src = "../image/bottom07_off.gif";
 imgs[13] = new Image(); imgs[13].src = "../image/bottom07_on.gif";
 imgs[14] = new Image(); imgs[14].src = "../image/bottom08_off.gif";
 imgs[15] = new Image(); imgs[15].src = "../image/bottom08_on.gif";
 imgs[16] = new Image(); imgs[16].src = "../image/bottom09_off.gif";
 imgs[17] = new Image(); imgs[17].src = "../image/bottom09_on.gif";
 imgs[18] = new Image(); imgs[18].src = "../image/bottom10_off.gif";
 imgs[19] = new Image(); imgs[19].src = "../image/bottom10_on.gif"; 
 imgs[20] = new Image(); imgs[20].src = "../image/bottom11_off.gif";
 imgs[21] = new Image(); imgs[21].src = "../image/bottom11_on.gif";
 imgs[22] = new Image(); imgs[22].src = "../image/bottom12_off.gif";
 imgs[23] = new Image(); imgs[23].src = "../image/bottom12_on.gif";
 imgs[24] = new Image(); imgs[24].src = "../image/botoomcontact_off.gif";
 imgs[25] = new Image(); imgs[25].src = "../image/botoomcontact_on.gif";
 imgs[26] = new Image(); imgs[26].src = "../image/bottom13_off.gif";
 imgs[27] = new Image(); imgs[27].src = "../image/bottom13_on.gif";
 imgs[28] = new Image(); imgs[28].src = "../image/holeinone_photo.gif"; 
 imgs[29] = new Image(); imgs[29].src = "../image/holeinone.gif";
 imgs[30] = new Image(); imgs[30].src = "../image/bottom14_off.gif";
 imgs[31] = new Image(); imgs[31].src = "../image/bottom14_on.gif";
}

function chgimg(id, imgname) {
 if(document.images) {
  if(imgs[imgname]) {
    document.images[id].src = imgs[imgname].src;
  }
  else {
    document.images[id].src = imgname;
  }
 }
}