Joomla & javascript task

Hi We need a link / widget on a client site that does the job of CTRL-F in ALL (ie 6-7-8, firefox, chrome, safari) browsers. The site is built in Joomla. We presume javascript would be required to do this task Background: Client has pages with many itempre-built search component. Code should take this format: Input box, that user enters term and submit button. Search of current page only. If there are results, all items within the page are highlighted, and the cursor moves to the first item. A popup says "Results found for <search term>: 6. Scroll down to see all results." If no results are shown, a simple "no results for your search term" is displayed. The search should be broad (any case, part word etc). Time frame for this task is 5 days.