/* pagetop */
bytefx = {
	$position:function(element){
		var	position = {x:element.offsetLeft, y:element.offsetTop};
		while(element = element.offsetParent){
			position.x += element.offsetLeft;
			position.y += element.offsetTop;
		};
		return position;
	},
	$size2:function(element, w, h){
		var	style = element.style;
		style.width = w + "px";
		style.height = h + "px";
	}
};


var play_cnt = 0;

function get_obj_y(target){

  $gosa = 0; //微調整の値px

  var pos = bytefx.$position(document.getElementById(target));
  return pos.y + $gosa;
}

function softScrollBack(top) {

  play_cnt++;
  softScrollBackExec(top, play_cnt, 0);
}

function softScrollBackExec(top, play_no, scrj) {

  if(play_cnt > play_no){
    //### console.log("play_cnt="+ play_cnt +" : play_no="+ play_no);
    return false;
  }

  if(navigator.appName == "Microsoft Internet Explorer" && document.compatMode == "CSS1Compat") {
    var scdist = document.body.parentNode.scrollTop;
  } else if(navigator.appName == "Opera") {
    var scdist = document.body.parentNode.scrollTop;
  } else if(navigator.appName == "Netscape" && navigator.userAgent.indexOf("Safari") != -1) {
    var scdist = document.body.scrollTop;
  } else if(navigator.appName == "Netscape" && document.compatMode == "CSS1Compat") {
    var scdist = document.body.parentNode.scrollTop;
  } else {
    var scdist = document.body.scrollTop;
  }


  if(scdist >= top){
    scdist = scdist - top;
    flag = -1;
    point = 0.2;
  } else{
    scdist = top - scdist;
    flag =  1;
    point = 0.2;
  }

  if(scrj<50 && scdist>0){
     scdist = (scdist>2) ? Math.ceil(scdist*point) : 1;
     scrj++;
     scrollBy(0,flag * scdist);
     //### console.log((flag * scdist));
     //### console.log("play_cnt="+ play_cnt +" : play_no="+ play_no);
     setTimeout("softScrollBackExec(" + top +","+ play_no +","+ scrj +")", 20);
  }
}


(function($) {
	$(function() {
		$.hamFunction.opacityRollOver({
			fnClass:'.over',	/*適応させる部分の変更*/
			opacityDef:1.0,		/*デフォルトの透明度指定*/
			fadeTime:150,		/*フェードの時間指定*/
			opacityOn:0.8,		/*マウスオーバー時の透明度の指定*/
			opacityOff:1.0		/*マウスアウト時の最初の透明度の指定*/
		});
	});
	
	$.hamFunction = {
		opacityRollOver: function(options){
			var c = $.extend(options);
			$(c.fnClass).each(function(){
				$(this).css('opacity',c.opacityDef).hover(
					function(){
        				$(this).fadeTo(c.fadeTime,c.opacityOn);
        			},
    				function(){
        				$(this).fadeTo(c.fadeTime,c.opacityOff);
   					}
   				)
			});
		}
	};
})(jQuery);