function checkdata()
{
     var uppervalue;

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

 if (document.ThisForm.Email.value.length < 9) {
         alert ("Do you have an email address?");
                  document.ThisForm.Email.focus();
         return false;
   }


 if (document.ThisForm.Surname.value.length < 3) {
         alert ("You forgot your name...");
                  document.ThisForm.Surname.focus();
         return false;
   }


 if (document.ThisForm.Street.value.length < 3) {
         alert ("You forgot your street address");
                  document.ThisForm.Street.focus();
         return false;
   }

 if (document.ThisForm.Town.value.length < 3) {
         alert ("You forgot your town");
                  document.ThisForm.Town.focus();
         return false;
   }

 if (document.ThisForm.Postcode.value.length < 4) {
         alert ("You forgot your post code");
                  document.ThisForm.Postcode.focus();
         return false;
   }

 if (document.ThisForm.terms.value.length < 3) {
         alert ("Please read and accept the Terms and Conditions before proceeding...");
                  document.ThisForm.terms.focus();
         return false;
   }

     return  true
}