if(agreement.checked)
     {
        e.parentElement.className = "BtGamestart";
        e.onclick = _onGameStart;
     }

function checkAgreement()
{
    if(agreement.checked)
    {
       var barTotal = document.getElementById("barTotal");

       if(barTotal.width == 671)
       {
          var sb = document.getElementById("startGame");
          sb.parentElement.className = "BtGamestart";
          sb.onclick = _onGameStart;
       }  
    }
    else
    {
       var e = document.getElementById("startGame");
       e.parentElement.className = "BtGamestart_d";
       e.onclick = _null;       
    }
}