I have it for my forum:
Demo.
Go to your
Admin CP ->
Add a New BB Code
Title: Button
BB Code Tag Name: button
Replacement:
Code:
<a href="{option}" target="_blank"><button>{param}</button><!--[if IE]> Link<![endif]--></a>
Example: [button="http://www.google.com/"]Google[/button]
Use Option: Yes
Remove Tag If Emptry: Yes
All other disable options: No
EXCEPT: Disable Automatic Link Parsing: Yes (if you have this option).
Note: Internet Explorer won't follow the button to a new URL so for IE users ONLY there will be a "Link" displayed next to the button so IE users can follow. If you don't want this remove the <!--[if IE]> Link<![endif]--> from the code.