/*
	ファイル名 : "/common/js/common.js"
	概要 : このJSファイルは全ページ共通で使用される変数、関数が定義されています
	サイト名 : Nexco中日本
	URL : http://www.c-nexco.co.jp/
*/


/* ---------------------------------------------------------------------
[1] 環境変数の設定
--------------------------------------------------------------------- */
var agent = navigator.userAgent.toLowerCase();
var win = (agent.indexOf("windows") != -1);
var mac = (agent.indexOf("mac") != -1);
var gecko = agent.indexOf("gecko") != -1;
var opera = agent.indexOf("opera",0) != -1;
var safari = agent.indexOf("safari") != -1;
var ie = agent.indexOf("msie") != -1 && !opera;
var ie5win = (agent.indexOf("msie 5.0") != -1) && win;
var ie55win = (agent.indexOf("msie 5.5") != -1) && win;
var ie6win = (agent.indexOf("msie 6.") != -1) && win;
var ie5mac = (agent.indexOf("msie") != -1) && mac;
var ns = agent.indexOf("netscape") != -1 && !opera;
var ns6 = (agent.indexOf("netscape6/6.") != -1) && ns;



/* ---------------------------------------------------------------------
[2] 検索フォームインプット部分テキスト表示
--------------------------------------------------------------------- 
function setvalue(id,sw){
	with(document.form){
		if(sw == "on"){
			if (search_input.value.indexOf("サイト内検索")>-1) search_input.value = "";
		} else {
			if (search_input.value == '') search_input.value = "サイト内検索";
		}
	}
}*/



/* ---------------------------------------------------------------------
[3] 文字サイズ変更CSS
--------------------------------------------------------------------- */
function setFontCss(){
	document.write('<link href="/css/bfont.css" rel="alternate stylesheet" type="text/css" media="screen,tv" title="dai" />');
	document.write('<link href="/css/mfont.css" rel="alternate stylesheet" type="text/css" media="screen,tv" title="tyu" />');
	document.write('<link href="/css/sfont.css" rel="stylesheet" type="text/css" media="screen,tv" title="sho" />');
}
setFontCss();




/* ---------------------------------------------------------------------
[4] 文字サイズ変更
--------------------------------------------------------------------- */
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);


/* ---------------------------------------------------------------------
[5] ポップアップウィンドウ
--------------------------------------------------------------------- */
function Popup_win(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}



/* ---------------------------------------------------------------------
[6] ビハインドメニュー
--------------------------------------------------------------------- */
flag = false;
function TreeMenu(TreeName) {
TreeName = document.all[TreeName].style;
if(TreeName.display == 'none') TreeName.display = "block";
else TreeName.display = "none";
}