Fix "Can replace a node with some other node" in IE<9
Fix "Can replace a node with some other node" in IE<9

skyh/knockout,pianove/knockout,hitesh97/knockout,mattbalmer/knuckles,stonegithubs/knockout,martijnwetering/knockout,ErikSchierboom/knockout,pianove/knockout,DekeYan/knockout,brianmhunt/knockout,bago/knockout,DekeYan/knockout,moonpyk/knockout,mattbalmer/knuckles,brianmhunt/knockout,youprofit/knockout,Sir0xb/knockout,xeronith/knockout,stonegithubs/knockout,JesseQin/knockout,gwokudasam/knockout,skyh/knockout,getshuvo/knockout,JesseQin/knockout,Sir0xb/knockout,xeronith/knockout,hitesh97/knockout,cgourlay/knockout,ErikSchierboom/knockout,gwokudasam/knockout,martijnwetering/knockout,cgourlay/knockout,bago/knockout,moonpyk/knockout,youprofit/knockout,getshuvo/knockout