Rcx Brick Is There Any Way To Manually Control My Infared Transmitter?

Is there any way to manually control my infared transmitter? - rcx brick

IRS has a sensor for my Lego RCX. Is there a way to manually control to this or a program like a remote control or whatever you want addressed? I want to use only as a remote control because I'm cheaper to buy a new one. sounds noobish, but I do not care. If this is not a program, it is a way I can give as a Java script to do to him what I want? Thank you.