/*  Roll over
---------------------------------------------------------- */

try{
	window.addEventListener("load",imageRollover,false);
}catch(e){
	window.attachEvent("onload",imageRollover);
}

function imageRollover() {
	var images = document.images;
	var preLoadImage = new Array();
	for (var i=0; i < images.length; i++) {
		if(images[i].className == "corp_hover") {
			preLoadImage[i] = new Image;
			preLoadImage[i].src = images[i].src.replace(".gif", "_on.gif");
			images[i].onmouseover = function(){ this.src = this.src.replace(".gif", "_on.gif") };
			images[i].onmouseout  = function(){ this.src = this.src.replace("_on.gif", ".gif") };
		}
	}
}


/*  Font Changer
---------------------------------------------------------- */

function fontChanger() {
	var s;
	if (document.styleSheets) {
		s = '<dl class="corp_font_changer"><dt><img src="/library/websites/www.com/cn/img/corporate/font_changer_label.gif" alt="Change Text Size"></dt>';
		s += '<dd class="corp_medium" onclick="setActiveStyleSheet(\'medium\')"><img class="corp_hover" src="/library/websites/www.com/cn/img/corporate/font_changer_m.gif" alt="Medium"></dd>';
		s += '<dd class="corp_large" onclick="setActiveStyleSheet(\'large\')"><img class="corp_hover" src="/library/websites/www.com/cn/img/corporate/font_changer_l.gif" alt="Large"></dd></dl>';
		document.write(s);
	}
}


/*  styleswitcher.js
 *  <http://www.alistapart.com/articles/alternate/>
---------------------------------------------------------- */

function setActiveStyleSheet(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;
    }
  }
}

function getActiveStyleSheet() {
  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;
}

function getPreferredStyleSheet() {
  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;
}

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);


/*  折りたたみ用　csr environment
---------------------------------------------------------- */
function openDiv(id){
	var NorB=document.getElementById(id).style.display;
		if (NorB=="block"){
			document.getElementById(id).style.display="none";
		}
		else {
			document.getElementById(id).style.display="block";
		}
}

function openNewWindow(path, name, feature){
	window.open(path, name, feature);
}