pre{
	display:block;
	font:12px "Courier New", Courier, monospace;
	padding:10px;
	border:1px solid #bae2f0;
	background:#e3f4f9;	
	margin:.5em 0;
	width:500px;
	}		
.roller-imagen{
	float:left;
}
.roller-contenido{
	float:left;
	margin: 0px 0px 0px 10px;
	width:530px;
}

#slider ul, #slider li{
	margin:0;
	padding:0;
	list-style:none;
	}
#slider, #slider li{ 
	/* 
		define width and height of container element and list item (slide)
		list items must be the same size as the slider area
	*/ 
	width:720px;
	height:100px;
	overflow:hidden; 
	}
span#prevBtn{}
span#nextBtn{}