Although I feel this is probably quite complicated, I am very much a newb, so I am trying here. I am self taught, with the help of my good freind, Dr Google and the many generous persons who are willing to share their knowledge with us Newbs.
This is what I want to be able to do:
have an swf file that when you mouse over it, another image slides up from the bottom to almost cover it. This new image has a button on it, that when clicked, performs an action (using getURL).

This is how far I have got
I have my swf file, and this other image slides up when mouse over. I have also tested the button action and it works.

This is my problem
When the new image slides up and stops, all is good UNTIL I put my mouse over the button. Then the slide up image cycles very quickly through its animation constantly. If I bring my mouse onto to the image above the button and bring it down onto the button, and it starts cycling, and I slowly move my mouse downwards, the cycling only comes up as far as my mouse is so that as my mouse travels down the screen the new image comes up the screen less and less (probably a red herring but I thought I should mention it).
I know it is not the actionscript in the button that does this because I have tried it with a button with no actionscript and it behaves the same.

This is how I got to there
I have an instance on the stage of btnPage, which is a button.
btnPage has in it an instance of Background_Image on the 'UP', and an instance of the same image on the 'OVER' with a movieclip as well called AnimPage, that starts below the stage and moves up via tweening. Now within AnimPage movie Clip I have three layers, the new image tweening up, an actions layer to get it to stop, and a third layer for the button.
It all works perfectly until I add the button. The way I have added the button it on the last frame I have dragged a jpg from the library and then right clicked on it and converted it to a button.
As soon as I do that the problem appears.

At 416KB the fla file is too big to upload (limit here is 300) so I will try to resize everything in the morning to upload it.
I am hoping there is something glaringly obvious to you guru's out there that can be seen without the fla, but as I said I will upload it in the morning.
I would be deeply, deleriously, joyed if anyone can help me with this.
Cheers Al.