i have a casio exilim EX-Z77, and the lens got screwed up today. i kept it in my pocket (in a case) all day because i had some photos on it for my photography project. The lens won't focus, and all the pictures come out blurry when i take it. when i turn it on and the lens comes out, it makes a whirring sound, like it is struggling. i already checked to see if there was anything stuck in the lens, and there wasn't. it isn't removable. help?