// サムネイル画像プリロード
function preloadImg(imgName) {
 for (var i = 0; i < imgName.length; i++) {
  if (document.images) (new Image()).src = imgName[i];
 }
}



//メイン画像切替

if(document.images) {
 var imgs = new Array();
 imgs[11] = new Image();  imgs[11].src = "../images/items/img03/item01.jpg";
 imgs[12] = new Image();  imgs[12].src = "../images/items/img03/item02.jpg";
 imgs[13] = new Image();  imgs[13].src = "../images/items/img03/item03.jpg";
 imgs[14] = new Image();  imgs[14].src = "../images/items/img03/item04.jpg";
 imgs[15] = new Image();  imgs[15].src = "../images/items/img03/item05.jpg";
 imgs[16] = new Image();  imgs[16].src = "../images/items/img03/item06.jpg";
 
 imgs[21] = new Image();  imgs[21].src = "../images/items/img03/item07.jpg";
 imgs[22] = new Image();  imgs[22].src = "../images/items/img03/item08.jpg";
 imgs[23] = new Image();  imgs[23].src = "../images/items/img03/item09.jpg";
}

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