Getting Key Strokes on XPages (eg. Enter Key Press)

Most javascript resources on the web said some thing similar to the following to capture key strokes.

var key;

if(window.event)

key=window.event.keyCode;

else

key=e.which //for firefox explicitly on XPages

But the same failed in case of XPages in Firefox and I was puzzled

After a long try I found the following fix which worked for client, web-IE/Firefox/Chrome. The trick is bolded in the following code

var key;
if(window.event)
key=window.event.keyCode;
else
key=thisEvent.which //for firefox explicitly on XPages

//if enter key is pressed proceed or else skip
if (key == '13') {
alert("Enter Key Pressed");
}

Hope this helps :)