
I have an IE only bug, probably down to do stray character. I get this popup message, but I have no idea where the bug is. In FF the various extensions indicate exactly where the error is, but in this isn’t an option. How would I go about tracking down where this error has occurred? IE7
Update
IE8 seems to be much better at debugging and has a browser mode to view as IE7. For those interested in the error, it was caused by frmUsername not existing
window.onload = function() {
document.getElementById('frmLogin').frmUsername.focus();
}
which is ignored in IE8
Install IE8. It has far better debugger and IE7 mode. With luck the same error will occur and you will be able to track it down.