If you increase the version number in your rsobj.php file then it won't overwrite it. It only overwrites older versions with newer versions when available.
You can get it to write html like images embedded from your database by turning off the Coss Site Scripting protection that is enabled by default. You can do that in the rsobj.php file, in your recordset code, or in the getColumnVal() reference.
To do it in the getColumnVal() reference, you just have to add a ",false" argument to the call like: