Whenever I open my custom browser
my program freezes untill the loading has finished.

Is this normal?
And if it is then how can I prevent my program from not allowing me to go back to the other form untill the loading has completed?

I'm using this url as a start up page for my custom browser;
http://www.runescape.com/game.ws

it links directly to a java-based game.
when the game loads it checks for updates etc ( java app )

so can I prevent my program from freezing or not ?
It looks as if my custom browser form keeps demanding focus ..
Not that I'm able to change it by clicking..
I can at most make my program create the msg:
Not responding..
if I click on the browser form while loading.
If I wait it loads in about 10-15 seconds.