jQuery(document).ready(function() {

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

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