Cross Browser Keyboard Support

First here is an excellant article on keystroke detection keystroke detection

Here is the code in order to support Cross Browser Keyboard:


document.onkeydown = function(e) {handleKeys(e)}
document.onkeypress = function(e) {handleKeys(e)}
var nonChar = false;

function handleKeys(e) {
var char;
var evt = (e) ? e : window.event; //IE reports window.event not arg
if (evt.type == "keydown") {
char = evt.keycode;
if (char < 16 || // non printables
(char > 16 && char < 32) || // avoid shift
(char > 32 && char < 41) || // navigation keys
char == 46) { // Delete Key (Add to these if you need)
handleNonChar(char); // function to handle non Characters
nonChar = true;
} else
nonChar = false;
} else { // This is keypress
if (nonChar) return; // Already Handled on keydown
char = (evt.charCode) ?
evt.charCode : evt.keyCode;
if (char > 31 && char < 256) // safari and opera
handleChar(char); //
}
if (e) // Non IE
Event.stop(evt); // Using prototype
else if (evt.keyCode == 8) // Catch IE backspace
evt.returnValue = false; // and stop it!
}