/*
jquery.util.js
Update 2017.10.03
Version 1.1
*/

jQuery(function($) {

	$('a[href^=#]').click(function(){
		var speed = 500;
		var href= $(this).attr("href");
		var target = $(href == "#" || href == "" ? 'html' : href);
		var position = target.offset().top - 50;
		$("html, body").animate({scrollTop:position}, speed, "swing");
		return false;
	});




	//---- ルートURL取得
	var root;
	var js_path = 'js/';
	var scripts = document.getElementsByTagName("script");
	var i = scripts.length;
	while (i--) {
		var match = scripts[i].src.match(/(^|.*\/)\/?jquery\.util\.js$/);
		if (match) {
			root = match[1].replace(js_path,'');
			break;
		}
	}

	//---- URLのパターン解析
	var url = document.URL;
	url = url.replace(root,'');


	//---- ロールオーバー
	var btnOver = function(){
		$('body .over').each(function(i){
			var target = $(this);
			var img = $(this).find('img');
			var src = img.attr('src');
			var tmp = new Image();
			var hover_tmp = new Image();
			var link = $(this).attr('href');
			link = link.replace(root,'');
			var tmp_url = src.replace(/\.(jpe*g|gif|png)(.*)?$/,'_cr.$1$2');
			var hover_url = src.replace(/\.(jpe*g|gif|png)(.*)?$/,'_on.$1$2');

			var hover_action = function(){
				//onの画像チェック
				hover_tmp.src = hover_url;
				hover_tmp.onload = function(){
					target.hover(
						function(){	img.attr('src',hover_url); },
						function(){	img.attr('src',src); }
					);
				}
			}

			if(url == link){
				tmp.onload = function(){
					img.attr('src',src.replace(/.(jpe*g|gif|png)(.*)?$/,'_cr.$1$2'));
				}
				tmp.onerror = function(){
					hover_action();
				}
				tmp.src = tmp_url;
			} else {
				hover_action();
			}
		});
	}


	/* ------ 実行部 -------- */
	$(function(){
		btnOver();
	});


});