code: public static boolean ct(Object left, Object right) throws PageException {
  	return Caster.toString(left).toLowerCase().indexOf(Caster.toString(right).toLowerCase()) != -1;
      }
docs: check if left is inside right (String-> ignore case)
  
  @param left string to check
  @param right substring to find in string
  @return return if substring has been found
  @throws PageException