function checkform(subscribe)
  {
    if(subscribe.name.value=="")
    {
      alert ("Please enter your Name")
      subscribe.name.focus()
      return false;
    }
    if(subscribe.email.value=="")
    {
      alert ("Please enter your Email")
      subscribe.email.focus()
      return false;
    }
    if(subscribe.email1.value=="")
    {
      alert ("Please re-enter your email")
      subscribe.email1.focus()
      return false;
    }
    if(subscribe.email.value==subscribe.email1.value)
    {

    }
    else
    {
      alert ("The email addresses are not the same")
      subscribe.email.focus()
      return false;
    }
  var x = subscribe.email.value;
  var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
  if (filter.test(x))
  {

  }
  else
  {
   alert('Invalid email address');
   return false;
  }
}