Help wanted with an ugly button!

I played around a bit with the skins of my buttons, I’m not sure how it turned out to this, but here I am now with a strange looking button.
As you can see in the FLA, there’s two “lines” in the button which seperate different graphics. One horizontal line which goes through the middle of the button, and one vertical line which splits the upper half in two.

I want to get rid of those “lines”, but I still want a good looking button with a gradient-style on the top.

My .FLA file can be found here: