#portfolio_box { 
    width: 100%;
    clear: both;
    overflow: hidden;
} 
li.portfolio_item { 
    padding: 0; 
    height: 170px; 
    width: 170px; 
    display: inline-block; 
    z-index: 1;
    float: left;
    margin: 0;
    overflow: hidden;
    position: relative;
    line-height: 1em; 
}
#portfolio_kolom1 {
	width: 60px;
	float: left;
}
#portfolio_kolom2 {
	width: 720px;
	float: left;
}

.photo_content {
	float: left;
	margin: 0px 5px 5px 0px;
   display: table;
   position: relative;
}
.photo_content li {
    list-style: none;
    display: table-cell;
    vertical-align: middle;
    text-align:center;
margin-top: inherit;
*clear: expression(
style.marginTop = "" + (offsetHeight < parentNode.offsetHeight ? parseInt((parentNode.offsetHeight - offsetHeight) / 2) + "px" : "0"),
style.clear = "none", 0
);
}
.photo_content li .outerContainer
{
	position: relative;
	display: table;
	overflow: hidden;
}





.prev{
  position: relative;
width:20px;
float:left;
margin-right: 20px;
}

.next{
width: 20px;
float:right;
margin-left: 17px;
}


.foto_groot li {list-style-type: none;}
.foto_groot {
    display: block;
    margin-left: auto;
    margin-right: auto;
}