function validateNewMember(tbEmail)
{       
    if(!tbEmail.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi))
    {
        alert("Please enter a valid e-mail address");
        return false;
    }    
    return true;
}

function KeyDownHandler(btn, e)
{
  if({ 13:1}[e.which||e.keyCode])
  {    
    e.returnValue=false;
    e.cancel = true;    
    if(btn && typeof(btn.click) == 'undefined')
    {
        btn.focus();
    }
    else
    {
        btn.click();
    }
  }
}