The 1999 shelf, sorted

1. Go back to the previous page/main/tips/tip_015.shtml Go back prompt → The tip people found most often through search. The prompt asks for a real link with a fallback address, using history only when the visitor came from this site.
2. Random quote/main/javascript/randomquote.shtml Random quote prompt → Showed a randomly chosen quote. The prompt adds a link to each quote’s source, a live region for screen readers and no repeats in a row.
3. Capture mouse position/main/javascript/capturemouseposition1.html Mouse position prompt → Reported where the pointer was on the page. The prompt uses pointer events, which cover mouse, pen and touch, and says which coordinate to read for which job.
4. Auto-size image popup/main/javascript/autosizeimagepopup.html Image popup prompt → Opened a picture in a new window sized to fit it. The prompt uses the dialog element instead, so the picture opens inside the page and closes with Escape.
5. Draggable layer/main/javascript/dragablelayer.html Draggable prompt → Let visitors drag a block around the page. The prompt uses pointer capture, keeps the block inside its container and adds arrow keys for keyboard users.
6. Slideshow/main/javascript/slideshow2.html Slideshow prompt → Stepped through a set of images. The prompt adds previous and next buttons, alt text, no autoplay and respect for the reduced-motion setting.
7. Frame buster/main/javascript/framebuster1.html CSP frame-ancestors Kept a page from being shown inside another site’s frame. The frame-ancestors directive of a Content-Security-Policy header now names which parents may embed a page, with no script.
8. Email address checker/main/javascript/emailaddresschecker1.html input type="email" Checked an address before a form was sent. The browser now validates an email input as email syntax; MDN still advises checking the value on the server.
9. Email this link/main/javascript/emailthislink1.html mailto: link Let a visitor send the page address to a friend. A plain mailto: link opens the visitor’s own email program with a new message, and needs no script.
10. Favicon/main/javascript/favicon1.html link rel="icon" Gave a site its small icon. A link element with rel="icon" names the icon file, and the browser shows it in its own interface.
11. Change scrollbar colourOld address not in the link records CSS scrollbar-color Once needed a browser-specific trick. The CSS scrollbar-color property now sets the colour of the scrollbar track and thumb.
12. No right-click/main/javascript/norightclick1.html Retired The most linked page on the old site. It blocked one mouse button and protected nothing; the article on disabling right-click explains why and what shows authorship instead.
13. Popup from hell/main/javascript/popupfromhell1.html Retired Judging by its name, it opened windows the visitor had not asked for. MDN notes that browsers now require a popup to open in direct response to user input.
14. Window maximize/main/javascript/windowmaximize.shtml Retired Resized the visitor’s browser window. MDN notes that a page cannot resize a window or tab it did not open with window.open(), or a window with several tabs.
15. Bookmark this page/main/javascript/bookmarkthispage1.html Retired Offered a button to bookmark the page. The editors know of no standard web feature that lets a page add a bookmark, so this one was not restored.

Names and old addresses come from links to the original site that still exist and from its redirect map, checked 2026-10-15. This is not the full original catalogue, and the code of the old scripts is not reproduced here.