var tab = {
   init: function(){
	   

      var tabs = this.setup.tabs;
      var pages = this.setup.pages;
  
      for(i=0; i<pages.length; i++) {
         if(i !== 0) pages[i].style.display = 'none';
         tabs[i].onclick = function(){ tab.showpage(this); return false; };
      }
   },
   showpage: function(obj){
      var tabs = this.setup.tabs;
      var pages = this.setup.pages;
      var num;
      for(num=0; num<tabs.length; num++) {
         if(tabs[num] === obj) break;
      }
  
      for(var i=0; i<pages.length; i++) {
         if(i == num) {
            pages[num].style.display = 'block';
            tabs[num].className = 'present';
         }
         else{
            pages[i].style.display = 'none';
            tabs[i].className = null;
         }
      }
   }
}

//ロールオーバースクリプト

function initRollovers() {
if (!document.getElementById) return

var aPreLoad = new Array();
var sTempSrc;
var aImages = document.getElementsByTagName('img');

for (var i = 0; i < aImages.length; i++) { 
if (aImages[i].className == 'btn') {
var src = aImages[i].getAttribute('src');
var ftype = src.substring(src.lastIndexOf('.'), src.length);
var hsrc = src.replace(ftype, '_ov'+ftype);

aImages[i].setAttribute('hsrc', hsrc);

aPreLoad[i] = new Image();
aPreLoad[i].src = hsrc;

aImages[i].onmouseover = function() {
sTempSrc = this.getAttribute('src');
this.setAttribute('src', this.getAttribute('hsrc'));
} 

aImages[i].onmouseout = function() {
if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_ov'+ftype, ftype);
this.setAttribute('src', sTempSrc);
}
}
}
}

window.onload=function() {
tab.setup = {
   tabs:document.getElementById('news_menu').getElementsByTagName('li'),
   pages:[
      document.getElementById('info'),
      document.getElementById('media')
   ]
}
tab.init();
initRollovers();
}

//プリロードイメージスクリプト

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


//ポップアップウィンドウのスクリプト
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}


//隠す〜見せるのスクリプト
function showImg(id){
	if(document.getElementById){
		if(document.getElementById(id).style.display == "none")
		document.getElementById(id).style.display = "inline";
	}
}
function hydeImg(id){
	if(document.getElementById){
		if(document.getElementById(id).style.display == "inline")
		document.getElementById(id).style.display = "none";
	}
}

//ページアップのスクリプト
function pageup(e) {
	UAGENT = navigator.userAgent.toUpperCase();
	if (UAGENT.indexOf("MSIE") >=0) { posi = event.y; }
	else { posi = e.pageY; }
	moveObje(posi);
}
function moveObje(position) {
	move = position / 10;
	point = parseInt(position - move);
	scrollTo(0,point);
	if (point > 0) { setTimeout("moveObje(point)",10); }
}