using mandatory fields script with Submit Once script

[ballboys10]

1) Script Title:
Required field(s) validation
2) Script URL (on DD):
http://www.dynamicdrive.com/dynamici...uiredcheck.htm
http://www.dynamicdrive.com/dynamici...submitonce.htm
3) Describe problem:
I put the submit once script and mandatory fields script in one of my pages that contains a form and one prevents the other from working. What is the problem and how do i fix it?