#slider ul, #slider li{
margin: 0;
padding: 0;
list-style: none;
}
#slider li{ 
width: 540px;
height: 428px;
overflow: hidden;
}	
#prevBtn, #nextBtn{ 
display: block;
height: 30px;
width: 39px;
position: absolute;
left: 30px;
top: 675px;
}	
#nextBtn{ 
left: 50px;
}														
#prevBtn a, #nextBtn a{  
display: block;
height: 13px;
width: 15px;
background: url(../images/arrow-up.gif) no-repeat 0 0;
text-indent: -5000px;
}	
#nextBtn a{ 
background: url(../images/arrow-down.gif) no-repeat 0 0;	
}