Doc Javascripts tip of the day   Removing the Trusted Application's Border Window Chrome
— tip of the day archive
ZDNET Developer
A1Javascripts.com
PPK JavaScript  lots of information, scripts
JavaScriptCity.com

DevEdge Newsgroup FAQ
Microsoft JScript References
Faqts.com  new faq has dhtml / dom etc

JavaScript Tutorials from HotDog creators
JavaScript Weirdness  what works and what doesn't
Nebulus Designs >Learning > javascript
Joe Barta's JavaScript Tutorial
DrClue's Javascript Reference
Links to W3C Dom / N6 mozilla resources

 Book Support Sites  usually have script examples
JavaScript World Javascript for the WWW Visual Quickstart 4th Ed.
Danny Goodman's Books

Hugh's Calculators  javascript & cgi examples
Javascript Corral  cut and paste site
Paul McFredries Scripts  forms, frames, dates + more
Website Abstraction  javascript tutorials, scripts and java applets
Timothy's Scripts - getting old now
ScriptXtrax.com  large java/javascript site
MickWeb.com  math functions, random background, list properties
— page and status bar scroller
— working with numbers  calculations etc
— dynamic calender script seems y2k compliant
— breadcrumbs© navigation
— breadcrumbs© navigation v1.2
— multiple choice quiz & same using images
— password tutorial
— javascript array tutorial
MaTt's Javascripts  random things, games clocks
Javascript-Page.com

CookieCentral.com - the name says it all
WebReference.com - Cookies
— another article
Irt.org Form to Cookies Article
Couldn't find what you wanted try this Altavista Search

 Image MouseOver Scripts 
Irt.org - MouseOver FAQ
RoChess's Mouseovers  works in all browsers
[CYTRO]'s Mouseover Effects
— using regular visual expressions
Magic Buttons single image change — $ for the rest
WPFD.com - Animated Gif Type
— simple  &  advanced — some variations
Evolt.org - No Script Edit well documented x-browser
Moock.org  mouseOver script
Charity Kahn on MouseOvers
— mouse over machine  code generator with remote image
Builder.com - Scripting ImageMaps
WebReference.com - ImageMap Rollovers
— text rollovers for both browsers
Website Abstraction mouseOver generator
Doc Ozone's MouseOvers
Cross Frame MouseOver from Joe Crawfords's lab
— mouseover to text input
Cross Frame Bi-Direction MouseOver
HtmlGoodies.com - Dual Flip
JoeMaller.com - Basic & Random Image MouseOver
Digital Extreme  mouseover sound
TheShockZone.com - MouseOvers with Sound
Builder.com - MouseOver Sound
Turtle-Web.com - MouseOver Sound

 Image Related Scripts 
Slide Show using buttons from Nick Heinle
Porters Preload with Onlad to new page should move only when images are loaded
Random Image use shift-reload to see different images
Radio Button -> Image Change
Image Change on Timer
Image Cycler not animated gifs
Image Billboard
MickWeb.com - Simple JPG Rotator

theFixor™ hates them, but for your viewing pleasure I have moved these links to a new window, and as an extra bonus for you version 4 users it will be maximized.  Hit Me with that New Window.  Or because I'm sooo kind to "my" viewers you could avoid all that that by using this more sensible link

BookMarklets.com  some amazing free bookmarklets including 216 color generator that you just drag to your bookmark file.   Check out the  Webreference Article  on making your own.
And this neat search engine  bookmarklet
Bookmarklets - The Littlest Next Big Thing
Favlets  from Tantek Celik - www related helpers - css sheet swapper
LifeOnTheDeck.com - bookmarklets

Here's what the Netscape JavaScript FAQ has to say about signed scripts:
A signed script is a script which has a digital signature associated with it, and which can therefore request additional privileges from the user. Each privilege has a distinct name, such as "UniversalBrowserWrite" -- allowing almost total control over the browser's behaviour -- or "UniversalBrowserRead" -- allowing the script to read data from other pages, preferences and so forth. There is information about using signed scripts here.
The section on "codebase principals" may be of special interest to intranet developers and others who wish to allow privileges to be requested without the hassle of signatures. Danny Goodman Article
To summarize the above, signing a script with a digital signature allows the user a way to verify you are who you claim to be before they decide whether or not they want to grant you access to potentially dangerous JavaScript features.