$(document).ready(function() {

	//Set css in Firefox (Required to use the backgroundPosition js)
	$('#shutter1').css({backgroundPosition: '0px 0px'});
	$('#shutter2').css({backgroundPosition: '0px 0px'});
	$('#shutter3').css({backgroundPosition: '0px 0px'});

	//Animate the shutter  
	$(".link").hover(function(){
	$(this).parent().animate({backgroundPosition: '(0px -100px)'}, 500 );
	}, function() {
	$(this).parent().animate({backgroundPosition: '(0px 0px)'}, 500 );
	}); 
	});