// ------------------------------------------------------------------------------
//  common js
// ------------------------------------------------------------------------------
/*

   01........オンマウスイメージ
   02........スクロールするページトップへ
   03........文字サイズの変更：styleswicher
   04........スワップイメージ

*/

// ------------------------------------------------------------------------------
// ***01 オンマウスイメージ***
// ------------------------------------------------------------------------------


function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");
		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}
if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}


// ------------------------------------------------------------------------------
// ***02 スクロールするページトップへ***
// ------------------------------------------------------------------------------

function getScrollLeft() { 
 if ((navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1)) {

  /*WinIE6標準モード稼動オブジェクト差異対応
    WinIE6標準モードとそれ以外で、それぞれ稼動しているオブジェクトを取り出す*/
  docele=(document.compatMode=="CSS1Compat")?document.documentElement:document.body;

  return docele.scrollLeft;

 } else if (window.pageXOffset) {
  return window.pageXOffset;
 } else {
  return 0;
 }
}

function getScrollTop() { 
 if ((navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1)) {

  /*WinIE6標準モード稼動オブジェクト差異対応
    WinIE6標準モードとそれ以外で、それぞれ稼動しているオブジェクトを取り出す*/
  docele=(document.compatMode=="CSS1Compat")?document.documentElement:document.body;
  
  return docele.scrollTop;

 } else if (window.pageYOffset) {
  return window.pageYOffset;
 } else {
  return 0;
 }
}

var pageScrollTimer;

function pageScroll(toX,toY,frms,cuX,cuY) { 
 if (pageScrollTimer) clearTimeout(pageScrollTimer);
 if (!toX || toX < 0) toX = 0;
 if (!toY || toY < 0) toY = 0;
 if (!cuX) cuX = 0 + getScrollLeft();
 if (!cuY) cuY = 0 + getScrollTop();
 if (!frms) frms = 6;

 if (toY > cuY && toY > (getAnchorPosObj('end','enddiv').y) - getInnerSize().height) toY = (getAnchorPosObj('end','enddiv').y - getInnerSize().height) + 1;
 cuX += (toX - getScrollLeft()) / frms; if (cuX < 0) cuX = 0;
 cuY += (toY - getScrollTop()) / frms;  if (cuY < 0) cuY = 0;
 var posX = Math.floor(cuX);
 var posY = Math.floor(cuY);
 window.scrollTo(posX, posY);

 if (posX != toX || posY != toY) {
  pageScrollTimer = setTimeout("pageScroll("+toX+","+toY+","+frms+","+cuX+","+cuY+")",16);
 }
}

function jumptop() { 
  pageScroll(0,0,3);
}

// ------------------------------------------------------------------------------
// ***03 文字サイズの変更：styleswicher***
// ------------------------------------------------------------------------------

/*--------------------------------------------
styleswitcher.js
http://www.alistapart.com/stories/alternate/

* Customized a little
--------------------------------------------*/

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

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

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

function createCookie(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 = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(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;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


// ------------------------------------------------------------------------------
// ***04 スワップイメージ***
// ------------------------------------------------------------------------------

//menufunc.js  javascript functions for swapmenu
//defection
roll01Over=new Image();
roll01Off=new Image();
roll02Over=new Image();
roll02Off=new Image();
roll03Over=new Image();
roll03Off=new Image();
//loading .gif
function preloadImages(){
	if(document.images){
		roll01Over.src="img/index/plan_ranking_thum-01_on.jpg";
		roll01Off.src="img/index/plan_ranking_thum-01_off.jpg";
		roll02Over.src="img/index/plan_ranking_thum-02_on.jpg";
		roll02Off.src="img/index/plan_ranking_thum-02_off.jpg";
		roll03Over.src="img/index/plan_ranking_thum-03_on.jpg";
		roll03Off.src="img/index/plan_ranking_thum-03_off.jpg";
	}
}
var aParts = new Array();
function inArray(aHaystack, sNeedle){
	for(i = 0; i < aHaystack.length; i++){
		if(aHaystack[i] == sNeedle){
			return true;
		}
	}
	return false;
}
//performes imageswap
function swapImages(sImgname, sOtherImgname){
	if(sImgname.src && sOtherImgname.src){
		if(!inArray(aParts, sImgname.name)){
			sImgname.src = sOtherImgname.src;
		}
	}else{
		//try{
			eval("document." + sImgname + ".src = " + sOtherImgname + ".src");
		//}catch(e){
		//}
	}
}
//end