function url2cmd(url) {
if (!url.match(/^http:\/\/(?:www\.|)nicovideo\.jp\/watch\/([a-zA-Z0-9]+)/)) {
    if (!url.match(/^http:\/\/(?:www\.|)nicovideo\.jp\/mylist\/([a-zA-Z0-9]+)\/([a-zA-Z0-9]+)/)) {
        if (!url.match(/^http:\/\/(?:www\.|)nicovideo\.jp\/mylist\/([a-zA-Z0-9]+)/)) {
            if (!url.match(/^http:\/\/(?:www\.|)nicovideo\.jp\/user\/([a-zA-Z0-9]+)/)) {
                html = '<a href="'+url+'">'+url+'</a>';
                document.write(html);
                return;
            } else {
                var id = RegExp.$1;
                main4(id);
            }
        } else {
            var id = RegExp.$1;
            main2(id);
        }
    } else {
        var id1= RegExp.$1;
        var id2= RegExp.$2;
        main3(id1,id2);
    }
} else {
    var id = RegExp.$1;
    main(id);
}
}

function main(id) {
    if (!id.match(/^[a-zA-Z0-9]+$/)) {
			html = '<a href="'+url+'">'+url+'</a>';
			document.write(html);
	        return;
    }

		html = "";
	html += '<div style="width:318px; border:solid 1px #CCC;">';
	html += '<iframe src="';
	html += 'http://www.nicovideo.jp/thumb/';
	html += id;
	html += '" width="100%" height="198" scrolling="no" border="0" frameborder="0">';
	html += '<a href="http://www.nicovideo.jp/watch/' + id + '" target="_blank">http://www.nicovideo.jp/watch/' + id + '</a><br>' ;
	html += '</iframe>';
	html += '</div>';
  document.write(html);
}

function main2(id) {
    if (!id.match(/^[a-zA-Z0-9]+$/)) {
			html = '<a href="'+url+'">'+url+'</a>';
			document.write(html);
	        return;
    }

		html = "";
        html += '<div style="width:318px; border:solid 1px #CCC;">';
        html += '<a href="http://www.nicovideo.jp/mylist/' + id + '" target="_blank">http://www.nicovideo.jp/mylist/' + id + '</a><br>' ;
        html += '</div>';
	html += '<div style="width:318px; border:solid 1px #CCC;">';
	html += '<iframe src="';
	html += 'http://www.nicovideo.jp/thumb_mylist/';
	html += id;
	html += '" width="100%" height="198" scrolling="no" border="0" frameborder="0">';
	html += '<a href="http://www.nicovideo.jp/mylist/' + id + '" target="_blank">http://www.nicovideo.jp/mylist/' + id + '</a><br>' ;
	html += '</iframe>';
	html += '</div>';
  document.write(html);
}

function main3(id1,id2) {
    if (!id1.match(/^[a-zA-Z0-9]+$/)) {
        return;
    }
    if (!id2.match(/^[a-zA-Z0-9]+$/)) {
        return;
    }
    html = '';
    html += '<div style="width:318px; border:solid 1px #CCC;">';
    html += '<a href="http://www.nicovideo.jp/mylist/' + id2 + '" target="_blank">http://www.nicovideo.jp/mylist/' + id2
 + '</a><br>' ;
    html += '<div style="width:318px; border:solid 1px #CCC;">';
    html += '<iframe src="';
    html += 'http://www.nicovideo.jp/thumb_mylist/';
    html += id2;
    html += '" width="100%" height="198" scrolling="no" border="0" frameborder="0">';
    html += '<a href="http://www.nicovideo.jp/mylist/' + id2 + '" target="_blank">http://www.nicovideo.jp/mylist/' + id2 + '</a><br>' ;
    html += '</iframe>';
    html += '</div>';
    document.write(html);
}

function main4(id) {
    if (!id.match(/^[a-zA-Z0-9]+$/)) {
			html = '<a href="'+url+'">'+url+'</a>';
			document.write(html);
	        return;
    }

		html = "";
        html += '<div style="width:318px; border:solid 1px #CCC;">';
        html += '<a href="http://www.nicovideo.jp/user/' + id + '" target="_blank">http://www.nicovideo.jp/user/' + id + '</a><br>' ;
        html += '</div>';
	html += '<div style="width:318px; border:solid 1px #CCC;">';
	html += '<iframe src="';
	html += 'http://www.nicovideo.jp/thumb_user/';
	html += id;
	html += '" width="100%" height="182" scrolling="no" border="0" frameborder="0">';
	html += '</iframe>';
	html += '</div>';
  document.write(html);
}