According to HTML specs, the select tag in HTML doesn\'t have a readonly attribute, only a disabled attribute. So if you want to keep
Yet another more contemporary option (no pun intended) is to disable all the options of the select element other then the selected one.
note however that this is an HTML 4.0 feature and ie 6,7,8 beta 1 seem to not respect this.
http://www.gtalbot.org/BrowserBugsSection/MSIE7Bugs/OptionDisabledSupport.html