function checkdata()
{ var uppervalue;

 if (document.ThisForm.fname.value.length < 3) {
         alert ("You forgot your first name or initials !");
         document.ThisForm.fname.focus();
         return false;   }
 if (document.ThisForm.lname.value.length < 3) {
         alert ("You forgot your last name !");
         document.ThisForm.lname.focus();
         return false;   }
 if (document.ThisForm.addr1.value.length < 5) {
         alert ("Where would you like the book sent ?");
         document.ThisForm.addr1.focus();
         return false;   }
 if (document.ThisForm.town.value.length < 3) {
         alert ("You forgot the Suburb/Town !");
          document.ThisForm.town.focus();
         return false;   }
if (document.ThisForm.post.value.length < 4) {
         alert ("You forgot the Post Code !");
         document.ThisForm.post.focus();
         return false;   }
if (document.ThisForm.phone.value.length < 8) {
         alert ("Is there a contact telephone No ?");
         document.ThisForm.phone.focus();
         return false;   }
 if (document.ThisForm.email.value.length < 8) {
         alert ("Do you have an email contact address ?");
          document.ThisForm.email.focus();
         return false;   }

     return  true
}