.scroll{
	position:absolute;
	display:block;
	height:313px;
	overflow:scroll;
	padding: 0px 30px 15px 20px;
	padding-bottom:10px;
	

	
	
}

#box1{
	margin-top:10px; width:150px; 
	
}

#box2{
	left:450px;
	top:0;
}

#box3{
	left:50px;
	top:350px;
}

#box4{
	left:450px;
	top:350px;
}

#changeContent{
	display:block;
	position:absolute;
	top:15px;
	left:450px;
	background:#999;
	text-decoration:none;
	padding:10px;
	color:black;
	font-size:14px;	
}

#changeContent:hover{
	background:#ccc;
}