1. So you know, you've added jscript code to your form. It doesn't appear that you have actually written any script, just that you have added some event handlers. Did you maybe select the custom code option for submit?
2. When I walk back through the data connection wizard for your main data connection (following the steps I outlined for you in my first post), I can see in the submit status why currently submit is not allowed:
Submit status: Not allowed - One or more of the columns in the data source has a large binary data type such as text, ntext, hyperlink or image. Large binary data types are not supported.
The culprit would be the 'Description' field in the tblAbsences table.
After deselecting that, I get:
Submit status: Disabled - A many to one relationship might exist between two tables in the data source
You may need to rethink your data structure in order to be able to create a form from it that IP will allow submit on.