The IDE reformats my HTML when I switch from source to design and back.  It doesn't do it every time, just at certain times.  For example, it does it after I pull a textbox from the toolbox and insert it into a table.  I can't find the option that tells VS 2005 IDE to leave the HTML formatting unaltered.  For example, I coded this:

<div>
<table cellpadding="2" cellspacing="1" width="600px">
    <tr>
        <td>My Prediction</td>
        <td></td>
        <td></td>
        <td></td>
    </tr>
</table>
</div>

After I insert a textbox control it reformats the HTML into a SINGLE LINE:

<div><TABLE>cellpadding="2" cellspacing="1" width="600px"><tr><td>My Prediction</td>...etc...

In addition, it converts some tags to upper case.  It also adds a <TBODY> tag.

Is there an option that tells the IDE not to reformat the HTML?
I am using some AJAX.  Could that be a factor?

Some Editor features can be disabled/enabled from Tools>Options>TextEditor+HTML

I've tried all of the options in from Tools>Options>TextEditor+HTML that would seem pertinent.  Nothing seems to prevent the IDE from reformatting the HTML.  Would anyone know which option might apply?

Yes, having Beta and RTM version of ajax assemblies will cause designer to lose track of element formatting. Make sure when you upgraded to Ajax release you removed old Atlas assemblies from bin.

Thank you, that makes sense Mikhail.  Tables in other pages in the same application are NOT reformatted.  Perhaps the difference is that I embedded this table within an Ajax Tab control.