function AppCheck()
{

 if(document.appointmentsform.Name.value == "")
  {
   alert("Please enter your name.");
   document.appointmentsform.Name.focus();
   return false;
  }

 if(document.appointmentsform.Email.value == "")
  {
   alert("Please enter your Email address.");
   document.appointmentsform.Email.focus();
   return false;
  }

 if(document.appointmentsform.Email.value.indexOf('@') == -1)
   {
    alert("Sorry, this is not a valid Email address.");
    document.appointmentsform.Email.focus();
    return false;
   } 

 if(document.appointmentsform.Email.value.indexOf('.') == -1)
   {
    alert("Sorry, this is not a valid email address.");
    document.appointmentsform.Email.focus();
    return false;
   } 
 if(document.appointmentsform.Phone.value == "")
  {
   alert("Please enter your phone number.");
   document.appointmentsform.Phone.focus();
   return false;
  }
  
}