Refresh page change the client window !?

Hello,

I am working on a SCAR projet, when the script refresh a page the client windows changes, I'd like to know what I can do againts that.

I've tryed

Code (Text):

1.  
2. handle := GetClientWindowHandle ;
3.  MoveMouseSmooth(551,711);
4.  Writeln('moving 1st time');
5.  Writeln('refresh now');
6.  wait(5000); //time to refresh...
7.  SetClientWindowHandle(handle); //back to 1st handle
8.  MoveMouseSmooth(551,711); //back to 1st position
9.  Writeln('moving2');
10.  

and the mouse at the second time doesn't go at the same place, it's suppose to due to the fact that its back to the original client window, so the same original x,y coordinates.