Can I mount a Shimano RD-TX51 onto a 2007 Norco Katmandu?

I broke the original Shimano TX50 rear derailleur on my Norco Katmandu (http://www.norco.com/2007bikes/templates/model/enlarge.php?id=105&view=&deets=2) and I'm wondering if I can replace it with a Shimano RD-TX51 (http://www.amazon.com/gp/product/B000FFQ4LE/ref=s9_simh_gw_p200_d0_i2?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=0CP2AK5Q1NCD059ETRCZ&pf_rd_t=101&pf_rd_p=470938631&pf_rd_i=507846)?