[jQuery] Opera & IE Issue

[Keri Henare]

Opera 9.27 throws up this error:

Event thread: click
Error:
name: TypeError
message: Statement on line 80: Type mismatch (usually a non-object
value used where an object is required)
Backtrace:
  Line 81 of linked script 
file://localhost/Users/kerihenare/Sites/adhub2/skin/js/functions.js
    $(this).animate({left :
(fusionSlider.panelPositions.indexOf(position) - 1) * $
(fusionSlider._slider).width()}, "300");

CODE:
    panelArrange : function(x) {
      $(fusionSlider._slider).children(fusionSlider._panels).show();
      x = x + 1;
      if (x == fusionSlider.panelPositions.length) x = 0;
      $(fusionSlider._slider).children(fusionSlider._panels + ':eq('+
x +')').hide();
      $(fusionSlider._slider).children(fusionSlider._panels).each(
        function(i) {
          var position = i - 1;
          if (position < 0) position =
fusionSlider.panelPositions.length - 1;
          $(this).animate({ left:
(fusionSlider.panelPositions.indexOf(position) - 1) * $
(fusionSlider._slider).width()}, '300'); // <-- LINE 80
        }
      );
    }