onchange="this.form.submit()" trouble

[quiero mas]

Happy New Year Everone

I have a two select drop down menu. The first populates the second.
Problem: After i attach the submit button the page jumps to the result page as
soon as the first selection is made

I know the problem in the code - onchange="this.form.submit()" is in the
first selects code. So its doing just what im telling it to do but i dont know
what to change onchange="this.form.submit()" to

Any help most appreciated

Code Below



<cfoutput>

</cfquery>
<select name="select_Main_Group" required="yes" onchange="this.form.submit()">
<option>Select Area</option>
<cfloop query="get_Main_Group">
<option value="#group_id#" <cfif
isDefined('form.select_Main_Group')><cfif form.select_Main_Group eq
"#group_id#">selected</cfif></cfif>>#group_name#</option>

[jorgepino]

you could use
<cfif ParameterExists(form.secondpulldown)>

[Dan Bracuk]

Get rid of the code and use a submit button. What you are attempting is as user unfreindly as it gets.