Drag and drop IE 8.0

Quiz question type drag and drop isn't working correct in IE 8. Problem is the image width is set to "" in quiz_drag_drop.classes.inc private function imageStyle($variables) { // Determine the dimensions of the styled image. $dimensions = array( 'width' => '', 'height' => 70, ); Fixed it by deleting width from the imageStyle function and also disabled this line of code // $variables['width'] = $dimensions['width'];