var o_bgmFlg = false;
var newBgmWindow;
function MM_openBrWindow_bgm(theURL,winName,features) {
  if(!o_bgmFlg){
    newBgmWindow = window.open(theURL,winName,features);
    o_bgmFlg = true;
  }else{
    if(newBgmWindow.closed){
newBgmWindow = window.open(theURL,winName,features);
    }else{
newBgmWindow.document.location.href = theURL;
    }
  }
  newBgmWindow.focus();
}