$(function() {  
		   
// OPACITY OF BUTTON SET TO 50%  
$("#gallery ul img").css("opacity","0.5");  

// ON MOUSE OVER  
$("#gallery ul img").hover(function () { 
								 
// SET OPACITY TO 100%  
$(this).stop().animate({  
opacity: 1.0  
}, "slow");  
},  

// ON MOUSE OUT  
function () {  

// SET OPACITY BACK TO 50%  
$(this).stop().animate({  
opacity: 0.5  
}, "slow");  
});  
});