Javascript Life-Saver!

After much trial and head scratching while debugging a custom text input *hint* dropdown (much like the gmail email address hinting) I discovered how to prevent arrow key action without returning the function before the desired time:

window.event.returnValue=false;

   or, rather:

if (document.all) {
    window.event.returnValue=false;
} else if (e.cancelable) {
    e.preventDefault();
}

Without this the up and down arrow keys to select hints also move the cursor the beginning or end of the input field (especially in Safari).
I found other (less effective) work-arounds which worked in all browsers except Safari on PC. So this little tid mit was a life saver indeed!

That's it!   It has almost the same effect as "return false;" without ending your script.

Thank you: http://www.webdeveloper.com/forum/showthread.php?t=93262