Changing select input to hidden input

[Chrisj]

I'm working with a php script that has a form for uploading video files.

One of the choices in the form is to choose a "channel".

 

I'd like help in changing this, so the user doesn't have to choose, it's always the same channel choice.

 

I was given some advice, but I could use some more information.

Here is the existing code that i'd like to change. And below that is the advice I was given.

 

<li style="width:240px; text-align:right;"><strong>[var.lang_select_channel]:</strong></li>
                <li style="width:400px; text-align:left;">
                  <select class="upload-video-form-input" style="width:160px;" size="1" name="channel" onchange="javascript:ahahscript.ahah('[var.base_url]/uploader.php?sub_cat='+ document.form_upload.channel.value, 'sub_change', '', 'GET', '', this);">
                   [var.fields_all;htmlconv=no]</select> ([var.lang_select_one])
                </li>

 

The advice:

"You need to remove the select input, and add this type of hidden input:

<input type="hidden" name="

Can someone help me create the right replacement code, so it will hidden and automatically choose a single channel? Thanks.