Depending on the work required (since I did not see any attachment, I am either blind or you didn't attach anything. Saw the website though, from the link.) it might be done in one afternoon or up to 3 days.
If the required task requires some usage of java script, that will be okay as well. If it requires heavy usage of java script we will have to re-negotiate the price. Simple changes to the CSS are fine, minor additions of javascript are fine. Complete redesign of the website is a job worth more then $10, if you want it done right.