Currency Not Loaded

Hi,
I have problem with currency.
I'm using Ringgit Malaysia as my default.
I added US Dollar as second currency.
But when I click or select US Dollar for currency at my homepage, it seems not to be able to load,
instead it remain showing the default currency.

I am using 1.4.9.1
here is the link to my shop: http://www.trend2style.com

I know why (correct me if i am wrong) if u redirect your index.php?route=common/home (SEO url friendly), it will refresh the page, so the currency stays the default currency even if you change it.
If someone can teach how to use "home seo url friendly" at the same time did not affect the currency change, please teach me how.

Thank you

currency is set as a session cookie. Has no effect when refreshing the page. I just tried it on your site and it works fine

currently it is working just fine as i haven't set the "index.php?route=common/home" to redirect to main trend2style.com (as explained in the basic tutorial list on how to seo url the "home" link). i initially add the redirect in htaccess, and the problem occurs. but if i remove it, then the problem resolved.