Retrite Source, Medium etc. from __utmz GA using jscript

I want to be able to retrite开发者_开发问答 the campaign, source and medium that google analytics records at the same time as the page loads.. is this possible? if so im guessing looking up the values from __utmz using jquery?

http://code.google.com/apis/analytics/docs/gaJS/gaJSApiCampaignTracking.html