Storing / Sorting / Displaying Data In Browser

I'm building an online auction system. Each participant will be allowed to post one bid per minute for about 3 hours. Each person's "bid history" must remain visible to him during the entire auction in a scrollable list, and this list must be sorted from high to low bid. These auctions will have upwards of 10,000 bidders and the server will be seriously stressed in dealing with so many bidders posting another new bid every minute. Therefore I want to alleviate any additional stress on the server by storing and sorting each bidder's "bid history" in his own browser -- perhaps in a cookie or maybe there is a better javascript-based data storage container available for this purpose ... ?

This seems like a natural application for javascript because of the fact that only the individual bidder needs to see his own list of submitted bids -- sorted from high to low -- and I'm hoping that javascript can be employed to do this.

1- A bidder enters his bid into a form (example 12345.67) and posts the form to the server;
2- Javascript grabs the posted value and appends it to the cookie or whatever container is storing the bids in the browser;
3- Javascript re-sorts the values and displays them again, perhaps in an iFrame or maybe in another kind of scrolling list on the main page.

Note that these bids will NOT be placed in ascending or descending order (this auction is different from most) and this means the values must be re-sorted each time a new value is posted -- so they always appear sorted from high to low in the list.