// pagetop
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);
  }
}

//reload flash
function flashimage(url,f_width,f_height,f_id){
gflash='<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="https://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="'+f_width+'" height="'+f_height+'" id="'+f_id+'" align="middle"><param name="allowScriptAccess" value="sameDomain" /><param name="movie" value="'+url+'" /><param name="quality" value="high" /><param name="bgcolor" value="#ffffff" /><embed src="'+url+'" quality="high" bgcolor="#ffffff" width="'+f_width+'" height="'+f_height+'" name="'+f_id+'" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="https://www.macromedia.com/go/getflashplayer" /></object>';
document.write(gflash);
}


//sub click navi
var Elements = new Array("menu1","menu2","menu3","menu4");
	function init()
		{
		kazu=4;
		for(i=0; i<kazu; i++)
			{
			lay_name=document.getElementById(Elements[i]);
			if(lay_name.id.indexOf('menu' , 0) == 1) taihi[lay_name]=lay_name.innerHTML;
			}
		}

	var current = 1;
	taihi=new Array();
	function trMenu(doko)
		{
		Obj = FindObj(Elements[0]);
		if(typeof(Obj)=="object")
			{
			Lay_name=FindObj(doko);
			if(Lay_name.style.visibility == 'visible')
				{
				changeClass("title"+current,"off");
				Lay_name.style.visibility='hidden';
				Lay_name.style.display="none";
				if(navigator.appVersion.indexOf("MSIE 4.") != -1)
				Lay_name.innerHTML=taihi[doko];
				}
			else 
				{
				if(cateNo(doko)!=+current)
					{
					cur_name=FindObj("menu"+current);
					changeClass("title"+current,"off");
					cur_name.style.visibility='hidden';
					cur_name.style.display="none";
					if(navigator.appVersion.indexOf("MSIE 4.") != -1)
					cur_name.innerHTML=taihi["menu"+current];
					}
				Lay_name=FindObj(doko);
				changeClass("title"+current,"off");
				changeClass("title"+cateNo(doko),"on");
				Lay_name.style.visibility='visible';
				Lay_name.style.display="block";
				//taihi[doko]=Lay_name.innerHTML;
				if(navigator.appVersion.indexOf("MSIE 4.") != -1)
				Lay_name.innerHTML="<br>"+taihi[doko];
				current = cateNo(doko);
				}
			}
		}
		
	function FindObj(name)
		{
		if(document.all) return document.all(name);
		else if(document.getElementById) return document.getElementById(name);
		}

	function changeClass(name,c)
		{
		Obj = FindObj(name);
		if(typeof(Obj)=="object") Obj.className=c; 
		}

	function cateNo(doko)
		{
			var no = doko.substr(4,doko.length-1);
			return no;
		}


	function optionMenu(opt) {
	  if(opt == ""){
	    return;
	  }
	  location.href = opt;
	}