Setting Fractional Zoom Level on OSM Maps

Hi,

I want to set Fractional Zoom level on the Open Street maps,I am rending the map using Open Layers and add that open Layer to my Map.and set the Fractional Zoom Level to true and added a PanZoomBar control to the map.

So when I drag the slider, tiles are not getting rendered in the map.However when I click on "+" and "-" buttons of the Pan Zoom bar which it will render with normal zoom levels.

Fractional zoom is working with WSM layers but not with OpenLayers

I referred the examples of

http://openlayers.org/dev/examples/fractional-zoom.html http://elemoine.github.com/openlayers/examples/clientzoom.html

None of them helped me Not throwing any error message as well.Any Idea how can we make it work?