Adobe has updated BrowserLab, a hosted service that lets web designers preview websites in different browsers and operating systems. The upgrade includes Safari 5 support, along with a Firebug add-on that gives Firefox users the ability to preview edits made with Firebug. Also new is better Dreamweaver CS5 integration, and a comparison tool enhancement, Smart Align, which can help people align screenshots to a specific area of a page. Customers who sign up for the service before April 30th, 2011 are entitled to 12 months of complimentary access. Pricing after the de