DHTML dropdown menu, IE and visibility graphical glitch

[BIOSMonkey]

I am trying to develop a drop down menu control. I know there are many other
scripts out there but I need to develop our own in house for licensing purposes.

Anyway, I am in the beginning stages and am already having problems. So far all
problems are in IE and not Firefox.

I have a simple menu with just one button and one level of items that pop up
below it. The list of items are A tags inside a DIV. The top level button is
also a DIV. The onmouseover event for the button DIV shows the menu, and a
document level onmouseover hides it.

1) When moving in and out of the button, I set the visibility of the DIV to
hidden or visible. When I show the item list, and the cursor is hovering over
the list, there is a graphical glitch surrounding the cursor, as if it shows the
bounding box of the cursor graphic.

2) When moving in and out of the button, I see the cursor 'catch' and drag for a
split second as the handler fires.

The strange thing is that neither of these exist in FF, and I do not see either
of these problems with some other DHTML menu scripts in IE. I also looked at
their source code and they use visibility as well (some use display:none but I
also tried that and got the same result) so I don't understand what the problem
is.

[VK]

BIOSMonkey wrote:

1) When moving in and out of the button, I set the visibility of the DIV to
hidden or visible. When I show the item list, and the cursor is hovering over
the list, there is a graphical glitch surrounding the cursor, as if it shows the
bounding box of the cursor graphic.

That is technically absolutely impossible: unless your're using a badly
prepared custom .cur file for your cursor. If not then it is some other
other problem not related with cursor graphics. Any link/code to look
at?