Bugfix. Use indexOf method of array.
Bugfix. Use indexOf method of array.

processone/strophejs,diegocr/strophejs,m800-limited/strophejs,minddistrict/strophejs,adozenlines/strophejs,adozenlines/strophejs,joachimlindborg/strophejs,processone/strophejs,teambox/strophejs,processone/strophejs,strophe/strophejs,Rom4eg/strophejs,joachimlindborg/strophejs,sualko/strophejs,teambox/strophejs,sualko/strophejs,ggozad/strophejs,ggozad/strophejs,strophe/strophejs,sualko/strophejs,Voiceworks/strophejs,damencho/strophejs,Voiceworks/strophejs,damencho/strophejs,joachimlindborg/strophejs,minddistrict/strophejs,diegocr/strophejs,m800-limited/strophejs,teambox/strophejs,damencho/strophejs,ggozad/strophejs,m800-limited/strophejs,diegocr/strophejs,Voiceworks/strophejs,adozenlines/strophejs,Rom4eg/strophejs,Rom4eg/strophejs,minddistrict/strophejs,strophe/strophejs