Change Wordpress Header Logo Using Custom CSS

Problem: - I recently updated a hosted Wordpress (3.3.1) theme and it broke some custom CSS for the header image - it seems to be an issue of a missing class tag in the page code - header image (the extensions of the J and G) must extend to dynamically fit browser viewport Website is jetstreaming [dot] org I've attached some images: - [login to view URL] is the current state - good marked [login to view URL] is how I would like it. Notice that the arms of the J and g extend Requirements: - the arms must expand to fit any modified browser viewport - solution must modify the header via CSS, background etc. - the logo must be centred in the viewport - I do not want a new png logo created with re-drawn arms - Must work on Safari, Firefox, Chrome and IE, most current versions of each Note: - please, no form-letter bids with lists of your previous work - bids directly addressing the issue with method ideas are preferred Thanks!