Changed default distance value from 0 to -1.  Changed test to check for undefined and if it is truthy.
Changed default distance value from 0 to -1.  Changed test to check for undefined and if it is truthy.

FroYoInc/wafflecone,FroYoInc/wafflecone,FroYoInc/wafflecone,FroYoInc/wafflecone