// 次の動画とかのリンク生成
function next_searchword(current) {
	var like_more = jQuery("#single-content > #like-more");
	var baseurl = siteurl + "/?s=";
	var buf, length;
	var words = new Array();
	words[0] = title;
	words[1] = title_increment(current);
	words[2] = title_increment(tags[0]);
	words[3] = title_increment(tags[1]);
	words[4] = title_increment(categories[0]);
	words[5] = title_increment(categories[1]);

	for (var i = 0; i < 6; ++i) {
		if (words[i] != undefined) {
			buf = encodeURIComponent(words[i]);
			jQuery(like_more).append('<a href="' + baseurl + buf + '">' + words[i] + "</a>");
		}
	}
}

// タイトルとかタグをインクリメント
function title_increment(title) {
	var str;
	if (title == "" || typeof(title) == "undefined" || typeof(title) == "null") {
		return undefined;
	}
	str = title.replace(/\d+/, function(num){
		var length = String(num).length;
		num = Number(num) + 1;
		num = digit_equal(num, length);
		return num;
	});
	return str; 
}

// 桁数を揃える
function digit_equal(num, length) {
	while(String(num).length < length) {
		num = "0" + String(num);
	}
	return String(num);
}