Preloaders for wordpress pages (Only for selected)

Hi Guys,

I am using this custom preloader -

http://jquer.in/helpful-jquery-plugins-for-html5-websites/depreload-js/

But it is not working fine , It is showing 100% and DONE even before loading complete of page , I think it is because wordpress adds some scripts in footer which take time in execution ,

Is there any good wordpress plugin of preloader , which can show actual percentage loaded of any page ?

Thanks