Sebastian questions

• Checking if textarea is empty in jQuery
• CSS font-family displays differently on Windows and Mac OS X
• Setting Access-Control-Allow-Origin header on source server
• Fixing an element when it reaches the top of the page
• 'Interface error: 2003' when connecting to database
• Correct way to build forms [closed]
• Remove everything up to and including character in PHP string
• JSON decoding from a URL
• Populate UITableView with JSON array
• CSS positioning divs

Sebastian answers