/*サイト名*/
var site = location.hostname;
/*ドメイン*/
var domain = location.hostname;
var path = '/';



var cookiename = site + 'fontsize2';
var SwitchObj = new Object();

SwitchObj.addEventListener = function(elm, type, func, useCapture)
{
	if(! elm)
		return false;

	if(!useCapture)
	{
		useCapture = false;
	}
	if(elm.addEventListener)
	{
		elm.addEventListener(type, func, false);
	}
	else if(elm.attachEvent)
	{
		elm.attachEvent('on'+type, func);
	}
	else
	{
		return false;
	}
	return true;
};

SwitchObj.target = function(evt)
{
	if(evt && evt.target)
	{
		/* Safari*/
		if(evt.target.nodeType == 3)
		{
			return evt.target.parentNode;
		}
		else
		{
			return evt.target;
		}
	}
	else if(window.event && window.event.srcElement)
	{
		/* Internet Explorer */
		return window.event.srcElement;
	}
	else
	{
		/* それ以外 */
		return null;
	}
};

SwitchObj.preventDefault = function(evt)
{
  if(evt && evt.preventDefault)
  {
    evt.preventDefault();
    evt.currentTarget['on'+evt.type] = function()
    {
    	return false;
    };
  }
  else if(window.event)
  {
    window.event.returnValue = false;
  }
};


fontSizeSwicth();

SwitchObj.addEventListener(window, 'load', initDocument);
function initDocument()
{
	var ary = new Array('small', 'medium', 'large');
	for( var i=0;i<3;i++)
	{
		var name = 'switchto' + ary[i];
		var elm = document.getElementById(name);
		if(! elm)
		{
			continue;
		}
		SwitchObj.addEventListener(elm,'click',fontSizeSwicth);
	}
}

function setSmartRollOver()
{
	var ary = new Array('small', 'medium', 'large');
	for( var i=0;i<3;i++)
	{
		var name = 'switchto' + ary[i];
		var array_names = ary[i] + "";
		var elm = document.getElementById(name);
		if(! elm)
		{
			continue;
		}
		elm.setAttribute("src",elm.getAttribute("src").replace("_on.", "_off."));
		
		elm.onmouseover = function() {
			this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
		}
		elm.onmouseout = function() {
			this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
		}
	}
}

window.onload = function()
{
  var cookie_value = getCookie(cookiename);
 if(cookie_value)
  {
    var m;
    if(m = cookie_value.match(/^(small|medium|large)$/))
    {
      selector = m[1];
      var elm = document.getElementById("switchto"+selector);
      if(elm != null)
      {
	      elm.setAttribute("src", elm.getAttribute("src").replace("_off.", "_on."));
	      elm.onmouseover = null;
	      elm.onmouseout = null;
	   }
     }
  }
}

function getCookies()
{
	return getCookie(cookiename);
}

function fontSizeSwicth(evt)
{
  var selector = 'medium';
  var cookie_value = getCookie(cookiename);
  
  if(evt)
  {
    var target = SwitchObj.target(evt);
    var m;
    if( m = target.id.match(/^switchto(small|medium|large)$/) )
    {
		//smartRollOverをkill.
		setSmartRollOver();

		//押されたボタンをオレンジにする.
		target.setAttribute("src", target.getAttribute("src").replace("_off.", "_on."));

		//先に全てにSmartRollOverを設定する.
		target.onmouseout  = null;
		target.onmouseover = null;
		selector = m[1];
    }
    SwitchObj.preventDefault(evt);
  }
  else if(cookie_value)
  {
    var m;
    if(m = cookie_value.match(/^(small|medium|large)$/))
    {
      selector = m[1];
     }
  }


  var list = document.getElementsByTagName('LINK');
  for(var i=0;i<list.length;i++)
  {
    var rel = list.item(i).rel;
    var title = list.item(i).title;
    if(rel.match(/alternate/) && title.match(/^(small|medium|large)$/))
    {
      list.item(i).disabled = true;
      if(title == selector)
      {
        list.item(i).disabled = false;
      }
    }
  }
  
  /* Cookieセット（有効期限30日） */
  var expires = new Date();
  var time = expires.getTime() + (3600 * 24 * 30 * 1000);
  expires.setTime(time);
  setCookie(cookiename, selector, expires, domain, path);
}

function fontSizeFromFlash(selector)
{
  var list = document.getElementsByTagName('LINK');
  for(var i=0;i<list.length;i++)
  {
    var rel = list.item(i).rel;
    var title = list.item(i).title;
    if(rel.match(/alternate/) && title.match(/^(small|medium|large)$/))
    {
      list.item(i).disabled = true;
      if(title == selector)
      {
        list.item(i).disabled = false;
      }
    }
  }
  
  /* Cookieセット（有効期限30日） */
  var expires = new Date();
  var time = expires.getTime() + (3600 * 24 * 30 * 1000);
  expires.setTime(time);
  setCookie(cookiename, selector, expires, domain, path);
}



function setCookie(name, value, expires ,domain ,path)
{
  var cookie = name + "=" + encodeURIComponent(value);
  if(expires)
  {
    cookie += "; expires=" + expires.toGMTString();
  }
  if(domain)
  {
  	cookie += "; domain=" + domain;
  }
  if(path)
  {
  	cookie += "; path=" + path;
  }
  
  document.cookie = cookie;
}

function getCookie(name)
{
  var sRegExp = "(?:; )?" + name + "=([^;]*);?";
  var oRegExp = new RegExp(sRegExp);
  if(oRegExp.test(document.cookie))
  {
    return decodeURIComponent(RegExp["$1"]);
  }
  else
  {
    return '';
  }
}