モーダル戻る用
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja">
    <head>
     <meta http-equiv="Content-Script-Type" content="text/javascript"/>
     <meta http-equiv="Content-Style-Type" content="text/css"/>
     <meta http-equiv="content-language" content="ja,jp-ja"/>
     <meta charset="UTF-8"/>
     <link rel="stylesheet" href="/component:theme/code/1">
     <style>
     body{
     background:transparent;
     padding:0;
     }
     </style>
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
     <script>
     /*!
     * jQuery JavaScript Library v3.2.1
     * https://jquery.com/
     *
     * Includes Sizzle.js
     * https://sizzlejs.com/
     *
     * Copyright JS Foundation and other contributors
     * Released under the MIT license
     * https://jquery.org/license
     *
     * Date: 2017-03-20T18:59Z
     */
     //---------------------------
     //ProjectName: Credit Module
     //FunctionName: Back Module
     //CreatedBy C-take , sinazugawa
     //License MIT
     //---------------------------
     $(function() {
     var ua = navigator.userAgent.toLowerCase();
     var bReload= true;
     if ( ( ua.indexOf("applewebkit") >= 0 ||  ua.indexOf("firefox") >= 0 ) && ua.indexOf("edge") == -1 )
     bReload= false;
     $('.back').click(closeCredit);
     function closeCredit() {
     if ( bReload ) {
     history.go(-1);
     parent.location.href = document.referrer.split('#')[0];
     } else {
     history.go(-1);
     }
     return false;
     }
     });
     </script>
    </head>
    <body>
     <div style="width: 100%; text-align: center;">
     <a class="back" style="cursor: pointer;">戻る</span>
     </div>
    </body>
</html>
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