Update str_replace.js

Author: glenara

functions/strings/str_replace.js

@@ -23,9 +23,11 @@ function str_replace(search, replace, subject, count) {
   // bugfixed by: Glen Arason (http://CanadianDomainRegistry.ca)
   //   example 3: str_replace(Array('S','F'),'x','ASDFASDF');
   //   returns 3: 'AxDxAxDx'
-  // bugfixed by: Glen Arason (http://CanadianDomainRegistry.ca)
-  //            : Corrected count calculation
-
+  // bugfixed by: Glen Arason (http://CanadianDomainRegistry.ca) Corrected count
+  //   example 4: str_replace(['A','D'], ['x','y'] , 'ASDFASDF' , 'cnt');
+  //   returns 4: 'xSyFxSyF' cnt = 0 (incorrect before fix)
+  //   returns 4: 'xSyFxSyF' cnt = 4 (correct after fix)
+  
   var i = 0,
     j = 0,
     temp = '',