The disabled attribute can be set to keep a user from selecting the option until some other condition has been met (like selecting a checkbox, etc.). I … Alright I've got a function that's working fine on Internet Explorer but when I try to run it on Firefox it doesn't work. Unfortunately, setting the CSS background-color property does not work for (most/all?) Note that if you set it for just "option" and not "optgroup option" then any options that are not in an optgroup will also be indented. The HTML select element option can easily set selected using jQuery – $(selector).val(option-value);. The ID has a sentinel character in the beginning to aide in deserializing command packets. If you find that your current version of Firefox does support HTML apps, here is another browser extension which I recommend using. A disabled option cannot be selected by the user and is never submitted with the form. I have the following JQuery to disable / enable a textbox when a radio button is selected. Click the select element and try to select the second option. However, When I refresh the page by putting cursor in address bar and press enter everythig works fine (drowdownlist shows 0). Disclosure: Your support helps keep the site running! This is not the case in 184.108.40.206 version (windows xp sp 2). If it is not specified, then only one option can be selected at a time. For some reason when I generate dynamic option listings "