1<!DOCTYPE html> 2<html> 3<head> 4 <script type="text/javascript"> 5 function log(s) 6 { 7 var output = document.getElementById('output'); 8 output.innerHTML += s + "<br>"; 9 } 10 11 function doTest() 12 { 13 window.setInterval(function() { 14 15 var screen = window.screen; 16 log('screen availLeft: ' + screen.availLeft + ' availTop: ' + screen.availTop); 17 18 }, 1000); 19 } 20 window.addEventListener('load', doTest, false); 21 </script> 22</head> 23<body> 24 <p>On a two-monitor system, configure the menu bar to be on the right screen. Then drag this window between screens. When on the left screen, screen.availLeft should be negative.</p> 25 <div id="output"></div> 26</body> 27</html> 28