Page Flip version 2.13 (dynamic) loading issues

Hello Guys

You may have come across the Pageflip book application

Im using pageflip version 2.13(dynamic) for a client and i have got it functioning the only trouble Im having is the loading time in diferent browsers.

In Firefox the pageflip loads in under 20 seconds which is ideal

But in IE it can take up to a min or even longer…

does any1 know a solution to this problem as i cant seem to figure out the difference between the browsers.

thanks in advance