function preloadImg(preImgs){
 for(var i = 0; i < preImgs.length; i++){
   var preImgObj = new Image();
   preImgObj.src = preImgs[i];
 }
}
preloadImg(["/library/new/main/top/oshirase_new.gif"
				,"/library/new/main/top/oshirase_tenpo.gif"
				, "/library/new/main/top/oshirase_syohin_ser.gif"
				, "/library/new/main/top/oshirase_sonota.gif"
				,"/library/new/main/top/oshirase_new2.gif"
				,"/library/new/main/top/oshirase_tenpo2.gif"
				, "/library/new/main/top/oshirase_syohin_ser2.gif"
				, "/library/new/main/top/oshirase_sonota2.gif"]);