var preLoadFlag = "false";

 function preLoadImg(){
  arrImgList = new Array (
   "../img/member/b_signup_on.jpg","../img/member/b_pointcard_on.jpg","../img/member/b_myjoshin_on.jpg",
   "../img/select/b_sitemap01_on.jpg","../img/select/b_sitemap02_on.jpg","../img/select/b_sitemap03_on.jpg","../img/select/b_sitemap04_on.jpg",
   "../img/select/b_sitemap05_on.jpg","../img/select/b_sitemap06_on.jpg","../img/select/b_signup_on.jpg","../img/select/b_tengoku_on.jpg",
   "../img/select/b_pointcard_on.jpg","../img/select/b_cardentry_on.jpg",
   "../img/delivery/b_5years_on.gif","../img/delivery/b_airconditioner_on.gif","../img/delivery/b_area_on.jpg","../img/delivery/b_area02_on.gif",
   "../img/delivery/b_opwin_on.gif","../img/delivery/b_pcbuy_on.jpg","../img/delivery/b_shoplist_on.jpg","../img/delivery/b_visit_on.jpg","../img/misc/b_close_on.gif"
    
  );
  arrPreLoad = new Array();
  for (i in arrImgList) {
   arrPreLoad[i] = new Image();
   arrPreLoad[i].src = arrImgList[i];
  }
  preLoadFlag = "true";
 }

 function chgImg(fileName,imgName){
  if (preLoadFlag == "true") {
   document.images[imgName].src = fileName;
  }
 }


function chgImgImageSubmit(fileName,imgObj){
 imgObj.src = fileName;
}