/*
if(!Array.push) {
	Array.prototype.push = function(){
		for( var i=0; i<arguments.length; i++ )
			this[this.length] = arguments[i];
	}
}
*/


/*---------------------------------------------------------------*/

/*---------------------------------------------------------------*/

function KNTCommon(){

	var ua = navigator.userAgent;
	this.ua = {};
	this.ua.isWin    = ua.match(/Win/);
	this.ua.isMac    = ua.match(/Mac/);
	this.ua.isNN4    = (document.layers);
	this.ua.isNN6    = ua.match(/Netscape\/6/);
	this.ua.isNN7    = ua.match(/Netscape\/7/);
	this.ua.isMoz    = ua.match(/Gecko\//);
	this.ua.isIE     = (document.all && !window.opera);
	//this.ua.isIEver  = RegExp? ua.match(/MSIE (\d(.\d+)?)/)[1] : undefined;
	this.ua.isSafari = ua.match(/AppleWebkit/);

	this.file_name         = "default\.js";
	this.shared_dir_name   = "\/common\/";
	this.shared_dir_path   = this.getSharedDirPath();
}


KNTCommon.prototype = {

	initKNTCommon : function(){},

	getSharedDirName : function() {
		return this.shared_dir_name;
	},
	getScriptName : function() {
		return this.script_name
	},

	getSharedDirPath : function() {
		var path = "";
		var scriptTags = document.getElementsByTagName("script");
		
		if(RegExp){
			var reg = new RegExp( 'js\/' + this.file_name + '$' );
			for(var i=0; i<scriptTags.length; i++) {
				if(scriptTags[i].src && scriptTags[i].src.match(reg)){
					path = scriptTags[i].src.replace(reg,'');
					break;
				}
			}
		}
		return path? path: this.shared_dir_name;
	},


	loadJS : function() {
		for(var i=0;i<arguments.length;i++)
			document.write('<script type="text/javascript" src="' + this.getSharedDirPath() + 'js/' + arguments[i] + '"><\/script>');
	},

	setStyleSheet : function() {
		for(var i=0;i<arguments.length;i++)
			document.write('<link rel="stylesheet" href="' + this.getSharedDirPath() + 'css/' + arguments[i] + '" type="text/css" title="FontProperty'+ i +'">');
	}
};



/*---------------------------------------------------------------*/


KNTCommon.prototype.getActiveCssFileName = function (){
	var cssFile = "";
	cssFile  = (this.ua.isWin)? "win_" : ((this.ua.isMac)? "mac_" : "win_");
	cssFile += (this.ua.isIE)? "ie" : ((this.ua.isMoz)? "nn6" : ((this.ua.isNN7)? "nn6" : ((this.ua.isNN6)? "nn6" : "ie")));
	return cssFile;
}


KNTCommon.prototype.getCssFileTitle = function (){
	var ret = new Array();
	ret = [
	{
		suffix: "_b",
		title:  "fontlarge"
	},
	{
		suffix: "",
		title:  "fontmedium"
	},
	{
		suffix: "_s",
		title:  "fontsmall"
	}];
	return ret;
}


KNTCommon.prototype.__StyleChangeStep__ = 3;
KNTCommon.prototype.setStyleSheetForSS = function (){
	var step = 0;
	var data = this.getCssFileTitle();
	var cssfile = this.getActiveCssFileName();
	if(RegExp){
		for (var i=0; i<data.length; i++){
			document.write('<link rel="stylesheet" href="' + this.getSharedDirPath() + 'css/' + cssfile + data[i].suffix + '.css" type="text/css" title="' + data[i].title + '">');
			step += 1;
		}
	}
	return (step==this.__StyleChangeStep__);
}



/*---------------------------------------------------------------*/

/*---------------------------------------------------------------*/


function StyleSwitcher(){
	this.__SwitcherEnabled__ = true;
	var cookie = this.readCookie("style");
	this.__Active_Switcher_Button__ = cookie? cookie : this.getPreferredStyleSheet();
}


StyleSwitcher.prototype.setActiveStyleSheet = function(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title){
        a.disabled = false;
      }
    }
  }
}


StyleSwitcher.prototype.getActiveStyleSheet = function() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

StyleSwitcher.prototype.getPreferredStyleSheet = function() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

StyleSwitcher.prototype.createCookie = function(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";    // else expires = "; expires=Fri, 31-Dec-1999 23:59:59 GMT;";
  document.cookie = name+"="+value+expires+"; path=/";
}

StyleSwitcher.prototype.readCookie = function(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}


StyleSwitcher.prototype.setActiveStyle = function( title ){
	if(this.__SwitcherEnabled__){
		this.setActiveStyleSheet( title );
		this.__Active_Switcher_Button__ = title;
	}
}


StyleSwitcher.prototype.initStyleSwitcher = function(){
	var cookie = this.readCookie("style");
	var title = cookie ? cookie : this.getPreferredStyleSheet();
	this.setActiveStyle(title);
}

StyleSwitcher.prototype.onUnloadStyleSwitcher = function(){
	var title = this.getActiveStyleSheet();
	this.createCookie("style", title, 365);    // createCookie("style", title);
}



/*---------------------------------------------------------------*/

/*---------------------------------------------------------------*/

function RollOverObject(  ){
	this.__Active_Button_ID__ = "";
	this.plImages = new Array();
	this.plOnImages = new Array();
}


RollOverObject.prototype.preloadImages = function(srcs){
	var ret = new Array();
	if(!document.images || !srcs) return;
	for(var i=0;i<srcs.length;i++){
		(new Image()).src = srcs[i];
		ret.push(srcs[i]);
	}
}

RollOverObject.prototype.swapImage = function(id, status ){
	if( this.__Active_Button_ID__ == id && status =="off" ) return;
	status = status + "src";
	var elm = (document.all)? document.all[id] : document.getElementById(id);
	if( elm[status] ) elm.src = elm[status];

}


// ON画像のファイル名は、必ず***on.***
RollOverObject.prototype.init = function( button_ids, defaultID ){
	if(!document.getElementById && document.all) return;
	if(!document.images) return;

	var pli = new Array();
	var ploi = new Array();

	for( var i=0; i<button_ids.length; i++ ){
		var node = document.getElementById(button_ids[i]);
		var b = new Object();
		b.src = node.src
		b.filetype = b.src.substring( b.src.lastIndexOf('.') );
		b.basename = b.src.substring( 0, b.src.length - b.filetype.length );
		b.onsrc = b.basename + "on" + b.filetype;

		node.offsrc = b.src;
		node.onsrc = b.onsrc;

		pli.push(node.src);
		ploi.push(node.onsrc);
	}

	this.preloadImages(pli);
	this.preloadImages(ploi);
	if( defaultID ){
		this.__Active_Button_ID__ = defaultID;
		this.swapImage(this.__Active_Button_ID__, "on");
	}
}





/*---------------------------------------------------------------*/

var switchButtons = new Array("fontsmall", "fontmedium", "fontlarge");

var knt = new KNTCommon();
knt.__StyleChangeStep__ = 3;

var switcher = new StyleSwitcher();


if( !knt.setStyleSheetForSS() ){
	switcher.__SwitcherEnabled__ = false;
	knt.setStyleSheet( "win_ie.css" );
}
else{
	switcher.__SwitcherEnabled__ = true;
	var cookie = switcher.readCookie("style");
	var title = cookie ? cookie : switcher.getPreferredStyleSheet();
	switcher.setActiveStyle(title);
}

function changeStyle(id){
	roo.__Active_Button_ID__ = id;
	for( var i=0; i<switchButtons.length; i++ ){
		roo.swapImage( switchButtons[i], "off" );
	}
	switcher.setActiveStyle(id);
	roo.swapImage(id, "on");
}


/*---------------------------------------------------------------*/


var instanceStr = "roo";
var roo = new RollOverObject();
//eval('var ' + instanceStr + ' = new RollOverObject()\;');


function OnLoad(){


	switcher.initStyleSwitcher();
	roo.init(switchButtons, switcher.getActiveStyleSheet());
}


window.onunload = function(){
	if(switcher.__SwitcherEnabled__){
		switcher.onUnloadStyleSwitcher();
	}
}