Long Button
In this article I'll show you how to create a long button.
Step 1.
Create a new 250X100 pixels document with the white background. Choose the Elliptical
Marquee Tool and make a round selection (holding Shift).
Step 2.
Press a Quick Mask Mode button (or "Q").
Choose the Rectangular Marquee Tool and make a selection like
shown in the pic.2.

Step 3.
Holding Ctrl+Alt+Shift drag a duplikate to the right. Choose
the Rectangular Marquee Tool and make a selection like shown
in the pic.3. Press DEL to move away a selection content.

Step 4.
Now press a Standard Mode button (or "Q")
and save the selection (apply Select > Save Selection). Fill the
selection with pattern, texture or color (apply Edit > Fill).

Step 5.
Apply Select > Modify > Contract > 6 pixels and then press
Ctrl+Shift+I. Create a new layer. Press "D"
to resert colors and then "X" to set the white color
to foreground. Choose a Gradient Tool with "Foreground
to Transparent" and fill the selection from the left to the center.
Then press "X" button again to set the black color
to foreground. Choose a Gradient Tool with "Foreground
to Transparent" and fill the selection from the right to the center.
Now apply Select > Load Selection (Ctrl+Alt+4)
and then press Ctrl+Shift+I and press DEL.

Step 6.
Apply Select > Load Selection (Ctrl+Alt+4) and
then apply Edit > Stroke > 1 pixel. And that's it.
