for each select list, create a hidden form element.
The add the following onchange event code to the select list to populate the hidden form element with the selected label:
onChange="document.<formName>.<hiddenElementName>.value = document.<formName>.select[document.<formName>.<selectListName>.selectedIndex].text"
where:
<formName> is the name of the form
<hiddenElementName> is the name of the hidden element
<selectListName> is the name of the select list.
then use the hidden element in the insert record behavior.