Custom Toolbar button to open website in default webbrowser

I have been working for 2 days but still no luck.
I need to add a Paypal donate button on Toolbar that open the url to default cliet browser.
The button is done but i need the script function example.

Thanks…

ps.
Please do not ask me to read the help file because i did it and still dont got it.

Open the UserMain script and paste:
(replace http://www.gdgsoft.com to the URL of your choice)



Click Save Script.

Then for your “Donate” button, choose “Execute this script function” and UserMain.showdonate

Works like a charm.
Thank you