Can anyone tell me how do just do a simple ajax refresh of a bit of a page. eg. a table?

You will need to have a trigger mechanism to start the javascript remote fetching process (link to click for example). Then you will need to learn the DOM (Document Object Model) so you can re-write the table data with the returned data using more javascript. Then you need to go to the store and buy some of those press on nails so you won't bite your own nails off when trying to make it work in every browser.

Within the table make sure you give everything that needs a data swap a unique id value. This will make it easy to find it and swap it's value. AJAX can get fairly complex even for a simple table. I would suggest you read up on it. Once you get the concept, it's not too hard.

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vBWeather

all i basically want is just to refresh three variables xD. I was looking at this: http://www.vbulletin.org/forum/showthread.php?t=93249

Ok, i am totally stuck i just want to refresh 3 variables and run a bit of code when a someone clicks on a link. How can i do this?