URL Prefix in Browser Button

[Lanadad]

I'm trying to get a button in the target window that allows me to open a browser with an URL prefix appended with the name of the target.

I've tried fiddling with the code from ProfitUI (credits: GM9), but I think I'm making an error somewhere. Do I have to escape part of the URL characters?

Currently, this only opens a browser:

<Button Name="LookUp" OnPress="browser http://www.somewebsite.com/search?name= ## Parent.Name.LocalText" Tooltip="Strategy" />

Any help is appreciated.