Photoshop shortcut key question

[GodlessAstronomer]

Is PS (CS4 if relevant), if I have a tool selected and want to switch to another tool that's in the same toolbar button, is there a keyboard shortcut for this? For example I am on the Dodge tool and want to change to Burn, how do I do this on the keyboard?

Thanks,

 

[GodlessAstronomer]

I figured it out, it's Shift+[key].