function checkdata()

{
     var uppervalue;

 if (document.ThisForm.Email.value.length < 2) {
         alert ("You forgot your email address");
         document.ThisForm.Email.focus();
         return false;
   }


 var email = ThisForm.Email.value;
	var re = new RegExp("^[A-Z_a-z0-9-]+(\.[A-Z_a-z0-9-]+)*@[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)*(\.[A-Za-z]{2,3})$");
	if (!re.test(email))
	{
		alert('Please enter a valid email address');
	    document.ThisForm.Email.focus();

		return false;
	}


 if (document.ThisForm.APC.value.length < 3) {
         alert ("Please enter your Post Code");
         document.ThisForm.APC.focus();
         return false;
   }


 if (document.ThisForm.Firstname.value.length < 2) {
         alert ("You forgot your first name");
         document.ThisForm.Firstname.focus();
         return false;
   }


 if (document.ThisForm.Lastname.value.length < 2) {
         alert ("You forgot your last name");
          document.ThisForm.Lastname.focus();
         return false;
   }

	 return  true
}