// JavaScript Document


//ロールオーバー
function initRollOverImages() {
  var image_cache = new Object();
  $("img.swap").each(function(i) {
    var imgsrc = this.src;
    var dot = this.src.lastIndexOf('.');
    var imgsrc_r = this.src.substr(0, dot) + '_r' + this.src.substr(dot, 4);
    image_cache[this.src] = new Image();
    image_cache[this.src].src = imgsrc_r;
    $(this).hover(
      function() { this.src = imgsrc_r; },
      function() { this.src = imgsrc; });
  });
}

//ページ内移動
$(document).ready(initRollOverImages);

function backToTop() {
  var x1 = x2 = x3 = 0;
  var y1 = y2 = y3 = 0;
  if (document.documentElement) {
      x1 = document.documentElement.scrollLeft || 0;
      y1 = document.documentElement.scrollTop || 0;
  }
  if (document.body) {
      x2 = document.body.scrollLeft || 0;
      y2 = document.body.scrollTop || 0;
  }
  x3 = window.scrollX || 0;
  y3 = window.scrollY || 0;
  var x = Math.max(x1, Math.max(x2, x3));
  var y = Math.max(y1, Math.max(y2, y3));
  window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 25);
  }
}


//フォントサイズ変更
function class_cookielib(){ 
this.getCookie = getCookie; 
this.setCookie = setCookie; 
this.removeCookie = removeCookie; 

var expireDate = new Date(); 
expireDate.setFullYear(expireDate.getFullYear()+1); 
expireStr = "expires=" + expireDate.toUTCString(); 

function getCookie(name){ 
var gc=name+"="; 
var Cookie=document.cookie; 
if (Cookie.length>0) { 
var start=Cookie.indexOf(gc); 
if (start!=-1) { 
start+=gc.length; 
terminus=Cookie.indexOf(";",start); 
if (terminus==-1) terminus=Cookie.length; 
return unescape(Cookie.substring(start,terminus)); 
} 
} 
return ''; 
} 
function setCookie() { 
var key = arguments[0]; 
var val = arguments[1]; 
var path = (typeof(arguments[2]) != 'undefined' ? arguments[2] : '/'); 
var exp = (typeof(arguments[3]) != 'undefined' ? arguments[3] : expireStr); 
var sc = key + "=" + escape(val) + "; path=" + path + "; " + exp; 
document.cookie = sc; 
} 
function removeCookie(key,path) { 
if(!path){ 
path = '/'; 
} 
var rc = key + "=; path=" + path + "; expires=Thu, 1 Jan 1970 00:00:00 UTC"; 
document.cookie = rc; 
} 
} 
var cookieObj = new class_cookielib(); 

function onresize_handler(){ 
if(document.layers){ 
window.location.reload(); 
} 
} 
window.onresize = onresize_handler; 

var txtsize_val = 1; 
var txtsize_css_size = new Array(); 
txtsize_css_size[0] = '87%'; 
txtsize_css_size[1] = '100%'; 
txtsize_css_size[2] = '120%'; 
txtsize_css_size[3] = '137%'; 
txtsize_css_size[4] = '154%'; 
function setTextSize(){ 
if(cookieObj.getCookie('txtsize') != ''){ 
txtsize_val = 1 * cookieObj.getCookie('txtsize'); 
} 
document.write('<style type="text/css">'); 
document.write('* body { font-size:' + txtsize_css_size[txtsize_val] + '; }'); 
document.write('</style>'); 
} 

function changeTextSize(num){ 
var fl_update = false; 
var tmp_val = txtsize_val + num; 
if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
txtsize_val = tmp_val; 
fl_update = true; 
} 
if(fl_update){ 
cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
window.location.reload(); 
} 
} 

function defaultTextSize(){ 
var fl_update = false; 
var tmp_val = 1; 
if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
txtsize_val = tmp_val; 
fl_update = true; 
} 
if(fl_update){ 
cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
window.location.reload(); 
} 
} 


//新規ウィンドウ固定
function winOpen(url,window_name){
window.open(url,"syuri");
}

//ウインドウを閉じる
function close_win(){
var nvua = navigator.userAgent;
if(nvua.indexOf('MSIE') >= 0){
if(nvua.indexOf('MSIE 5.0') == -1) {
top.opener = '';
}
}
else if(nvua.indexOf('Gecko') >= 0){
top.name = 'CLOSE_WINDOW';
wid = window.open('','CLOSE_WINDOW');
}
top.close();
}