function validateForm(){
 	  var theForm = document.userForm;
	  var message = "";
	  var invalid = false;
	  var formCheckComplete = false;
	  var emailRE = /\b.+@.+\W.+\b/;
 	  //email address weird
	  

	  if (theForm.Email.value!=""){		

		  if(emailRE.exec(theForm.Email.value) == null)  {

			  invalid = true;

		      message = "Please enter a valid email address.";

		  }

	  } else {

	  	invalid = true;

		message = "Please enter an email address.";

	  }
	 

	  //missing category information in form
		value = theForm.Doctor.selectedIndex;
	  if (value == ""){
	    invalid = true;
	    message = "Please select a doctor.";
	  }
	  
  	  if(invalid)  {
   	     alert(message);
   	     return false;
  	  } else  {
    	      return true;
           
  	  }
	}