jumping

Hi everyone. On one character, instead of the classic three buttons: attack, jump, and special, I made an alternative version with two attack buttons (one for punches, one for kicks), then jump and special. The extra button is the kick button (Attack2), and I can chain the two attack combos. So...

How would you guys go about making an animation like what Rolento does in Final Fight, where he can jump up onto one of the construction beams of the elevator to briefly run and/or throw grenades before jumping back into the main area? I've got a boss character that needs to briefly do something...