Show but effect moves down instead of diagonal?

Show but effect moves down instead of diagonal?

I've got a div with a border around it.  I'm using toggle so that when you click on a hyperlink on the page, it toggles and shows that div.  When that div renders with the show, the border is painted diagonally when it starts to render to the page.

Is it possible to make that render action somehow render up and down or even a different type of effect?  I do not like how the border panes diagonally when that div is shown.

I can't find anything yet in the jQuery docs that would allow this.  Maybe I just overlooked it?