I'm quite new to CSS but keen to learn quickly, I'm working on making a sort of online CV website for myself and I'm working from a CSS template I've sourced online.

I immediately see if I want to makes changes to my site menu titles then I have to make the changes across every page, is there not a more efficient way I can do this from a central location?

I've heard of server-side includes but I don't think it's the...

I have developed a form that runs a folder browser dialog and then details all filenames within the chosen folder in a listbox. Currently the filenames populate a 1-D array before they are written out to the listbox.

I need to introduce a combobox that will act as an extension filter. So, when the filenames are written to the listbox, the combobox is populated with the unique file extensions from this list. When the extension is...