select based on select

[dtwilder88]

I have two selects on a form. The first select is populated with directories in the root. The directories in the root may have subdirectories. If a directory with subdirectories is chosen in the first select, I want the second select to be populated with the subdirectories. The selects will be used to allow users to choose a directory and one subdirectory in which to upload a file. Here's what I have so far:

<form action="uploadSection.cfm" method="post" name="upload" enctype="multipart/form-data" class="body">
<p>Choose folder to put file in:<br />
<select name="mnuFolder" onchange="populateSubFolder()">
<cfdirectory action="list" directory="D:\theroot\" name="Parent_Folder">
<cfloop query="Parent_Folder">
<cfif #Parent_Folder.Type# eq "Dir">
<cfoutput>
<option value="#Parent_Folder.Name#\">#Parent_Folder.Name#</option>
</cfoutput>
</cfif>
</cfloop>
</select>
<br />

Choose subfolder (if any):<br />
<cfdirectory directory="theroot\#Parent_Folder.Name#\" name="Sub_Folder">
<select name="mnuSubFolder">
<cfoutput query="Sub_Folder" group="name">
<cfif #Sub_Folder.type# IS "DIR">
<option value="#Sub_Folder.Name#\">#Sub_Folder.Name#</option>
</cfif>
</cfoutput>
</select>


The first select is populated as expected but the second remains empty even if you choose a directory in the first.

Any ideas are greatly appreciated.

Doug Wilder
Fairbanks, AK

[Dan_Bracuk]

idea number 1 - google coldfusion related selects
idea number 2 - try to find the custom tag a lot of people use. I forget the name.
idea number 3 - find the code I once posted on one of these forums. It will contain the word etiology.