Issue when using ie 7 and 8

[Moses Yeung]

in the older browser
There have this code in doneResizing function:
$($.Scroll).addClass('mc-hide-scrolls');
$($.Scroll).removeClass('mc-hide-scrolls');

because doneResizing function will recall every 200ms.
When your web body have a scroll bar(overflow-y:scroll),
it will force to scroll to top.
When i remove this two code, all will be fine.

This project is a good and useful project. Nice.