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()", 35);
  }
}


/* Copyright(c) 2009 FLYING HIGH WORKS Inc. all right reserved.
====================================================================== */
//　画像切り替え
function showhide(view,menu,id,roopCNT) {
    for (i = 1; i <= roopCNT; i++) {
	   document.getElementById(view + i).style.display = 'none';
	   document.getElementById(menu + i).style.display = 'block';
	   }
	//アクティブ時
	document.getElementById(view + id).style.display = 'block';
	document.getElementById(menu + id).style.display = 'none';
	}


//　ポップアップ
function popWin(Aurl,Aname,Awidth,Aheight,Atoolbar,Alocation,Astatus,Ascroll,Amenu,Aresize) {
  Astr = "";
  if(Awidth != "")Astr+= "width=" + Awidth;
  if(Astr != "")Astr+=",";
  if(Aheight != "")Astr+= "height=" + Aheight;
  if(Astr != "")Astr+=",";
  if(Atoolbar)Astr+= "toolbar";
  if(Alocation)Astr+= ",location";
  if(Astatus)Astr+= ",status";
  if(Ascroll)Astr+= ",scrollbars";
  if(Amenu)Astr+= ",menubar";
  if(Aresize)Astr+= ",resizable";
  openwindow = window.open(Aurl,Aname,Astr);
  openwindow.focus();
}