//backtotop

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);
  }
}

//popup

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

function popWindow( url, width, height, windowName )
{
	var left = 20;
    var top = 20 ;
    
    win=window.open(url, windowName, 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=' + width + ',height=' + height + ',left=' + left + ',top=' + top);
}

function more(){popWindow("http://www2s.biglobe.ne.jp/~ryokoi/wan/prof/index.html", 750, 500, "popupplc");}

function contact(){popWindow("http://www2s.biglobe.ne.jp/~ryokoi/wan/fmail/index.html", 750, 500, "popupplc");}