Session Variables without cookies
I do not like code from untrusted sources reside on my harddrive so I dislike cookies in all its forms and flavors, yet if you want to do clever javascripting for your website you need to hold data in memory that transports across pages and does not necessarily needs to get stored on the server. A clever hack uses the window.name to store up to 2 MB of data - heck safari and firefox can even hold up to 64MB of data in that field (after which they crash - security problem? Opera has a 2MB limit set). The window.name is kept as long as you have the same window open so across page loads - just what you want if you need transistions of colors from one page to another for example. No word if Internet Exploder 6 is supporting it (I guess yes it should, but probably crashes after 100kb and you can only save M$ approving data ;)
read more about this cookie killing hack here: Session variables without cookies