Sabai questions

• Is it possible to detect what operating system a user is coming from using PHP? (mac or windows)
• How do I draw my Box2D world using HTML5 Canvas instead of Debug Draw?
• Given an angle in degrees, how can I find the logic for line of travel using x and y? (Math dilemma)
• Show invisible Tab characters but not end of line characters in Dreamweaver CS4/5? [closed]
• jQuery mouseleave function isn't being triggered when mouse moves quickly
• Making a simple car game with HTML5 canvas
• Multiplayer JavaScript game built with Node.JS - Separating players
• HTML5 Canvas performance - calculating loops/frames per second
• How can I multiply each item in an array easily with PHP?
• Can I use .delay() together with .animate() in jQuery?

Sabai answers