Why is my swf taking up more space than it actually is?

Question

I created a simple flash animation to work like a slideshow on the front page of my website. Because the container was 640 by 500 with a padding of 10 px all around, I made the

Answer 1

The <div class="mainspace"> Is actually 620x480 (not 640x500, as you said), with a padding of 10px. This makes the actual area of the <div> 600x460, since padding is on the inside, so you are overflowing.

Change

.mainspace {
  width:620px;
  height:480px;
  ...

to

.mainspace {
  width:640px;
  height:500px;
  ...

Answer 2

The DIV with the class mainspace has a left margin of 160px; is that what you mean?