/* Smooth Scroll
========================================== */
$(function(){ 
	$('a[href^=#]:not(a[href$=#])').click(function(){
		var href= this.hash;
		var $target = $(href == '#_top' ? 'body' : href);
		
		// アンカーリンクがあるページでだけ以下を実行
		if($target.size()){
			var top = $target.offset().top;
			$($.browser.safari ? 'body' : 'html').animate({scrollTop:top}, 500, 'swing');
		}
		return false;
	});
});


/* Mouse Over
========================================== */
$(function() {
  var image_cache = new Object();
  $(".swap").each(function(i) {
    var imgsrc = this.src;
    var dot = this.src.lastIndexOf('.');
    var imgsrc_on = this.src.substr(0, dot) + '_o' + this.src.substr(dot, 4);
    image_cache[this.src] = new Image();
    image_cache[this.src].src = imgsrc_on;
    $(this).hover(
      function() { this.src = imgsrc_on; },
      function() { this.src = imgsrc; });
  });
});