/** Window�I�[�v�� */
function wopen(name, url, w, h){
  var l=(screen.width-w)/2
  var t=(screen.height-h)/2
  var w = window.open( url,name,"left="+l+",top="+t+",width="+w+",height="+h+",toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes")
  if(navigator.platform.indexOf("Mac")!=-1){
    w.moveTo(l,t)
  }
  w.focus();
}