[newbie] help with simplification



Can anyone tell me here how to simplify the following result obtained with 
maxima?

h(s):=(1+r*c*s)/(1+r*c*s+l*c*s^2);
s:%i*sqrt(sqrt(l^2+2*c*l*r^2)/l-1)/(r*c);
abs(h(s));
(answer 3 times positive to questions)

I'd like to see a simplified version of abs(h(s)), can anyone here show 
how to proceed?

regards,
hugo