Delete your browser’s cache or cookies
While you shouldn’t have to do this too often, sometimes you might need to clear the cache or cookies.
In Internet Explorer, go to the Tools menu, and click on Delete Browsing History. To
delete the cache and cookies, click on Delete files... and Delete cookies...
In Safari, to clear the cache go to the Safari menu and click Empty Cache. To delete
cookies, go to the Safari menu, and click Preferences. Then choose the Bookmarks
icon. Click on Show Cookies below. You may choose to delete one, multiple, or all cookies.