var preLoadFlag = "false";

	function preLoadImg(URL){
		arrImgList = new Array (
			URL+"img/common/b_complete_on.jpg",URL+"img/common/b_back_on.jpg",URL+"img/common/b_close_on.jpg",
			URL+"img/common/b_confirm_on.jpg",URL+"img/common/b_entry_on.jpg",URL+"img/common/b_send_on.jpg",
			URL+"img/common/b_next_on.jpg",URL+"img/common/b_toppage_on.jpg",URL+"img/common/newadress_on.jpg",
			URL+"img/cart/b_buystep_on.jpg",URL+"img/cart/b_pageback_on.jpg",
			URL+"img/entry/b_agree_on.jpg",URL+"img/entry/b_noagree_on.jpg",URL+"img/entry/b_toppage_on.jpg",
			URL+"img/header/contact_on.jpg",URL+"img/header/about_on.jpg",URL+"img/header/cartin_on.gif",
			URL+"img/header/logout_on.jpg",URL+"img/header/member_on.gif",URL+"img/header/mypage_on.jpg",
			URL+"img/login/b_buystep_on.jpg",URL+"img/login/b_gotoentry_on.jpg",URL+"img/login/b_login_on.jpg",
			URL+"img/mypage/b_no_on.jpg",URL+"img/mypage/b_refuse_on.jpg",URL+"img/mypage/b_yes_on.jpg",
			URL+"img/products/b_expansion_on.gif",URL+"img/products/b_cartin_on.jpg",URL+"img/products/b_comment_on.jpg",
			URL+"img/shopping/b_ordercomp_on.jpg",URL+"img/shopping/b_select_on.jpg",
			URL+"img/side/button_cartin_on.jpg",URL+"img/side/button_login_on.jpg",URL+"img/side/guide_on.jpg",
			URL+"img/side/low_on.jpg",URL+"img/side/button_search_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;
	}
	
	function naviStyleChange(ids, bcColor, color){
		document.getElementById(ids).style.backgroundColor = bcColor;
	}