Broken brake lines!
 

On my way home from work, I was sitting at a red light pumping the brakes and then they hit the floor. Yikes. Next thing I know the pedal is really soft. I got some fluid today, filled it up, pumped the brakes just to watch the fluid drain front DS and rear PS area. What kind of work can I expect to be replacing these lines? I know how to change brakes and I've added stainless to my lines but I've never broken a line before. All information is greatly appreciated.