モーダルスクリプト
<!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"/>
<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
*/
//---------------------------------
//CreatedBy:C-take sinazugawa
//License MIT
//--------------------------------- 
$(function() {
    var ua = navigator.userAgent.toLowerCase();
    var bReload= true;
$('.faber').focus();
    if ( ( ua.indexOf("applewebkit") >= 0 ||  ua.indexOf("firefox") >= 0 ) && ua.indexOf("edge") == -1 )
        bReload= false;
 
    $('.fader').on("click",closeCredit);
    function closeCredit() {
        if ( bReload ) {
            history.go(-1);
            parent.location.href = document.referrer.split('#')[0];
        } else {
            history.go(-1);
        }
 
        $('.fader').off("click");
        setTimeout(function(){
            $('.fader').on("click",closeCredit);
        },1200);
    }
});
</script>
<style>
.fader {
    width: 100%;
    height: 100%;
    position: fixed;
}
</style>
</head>
<body>
<div class='fader'></div>
</body>
</html>
特に指定がない限り、このサイトのコンテンツには次のライセンスが適用されます: Creative Commons Attribution-ShareAlike 3.0 License