function addVergroting(foto, foto_omschrijving) {
 document.getElementById('vergroting_container').style.display='inline';
 document.getElementById('content').style.overflow='hidden';
 document.getElementById('vergroting_container').style.height=document.getElementById('content').clientHeight-12+'px';
 document.getElementById('vergroting').innerHTML="<div style='position: absolute; padding-bottom: 10px;'><img src='images/sluit_foto_button.gif' border='0' alt='Sluit foto' title='Sluit foto' style='position: absolute; right: 10px; top: 10px; cursor: pointer;' onclick='removeVergroting();' /><img src='images/projecten/"+foto+"' border='0' alt='' class='inlinefoto' style='width: 500px;' /><div style='margin-top: 3px; text-align: center;'>"+foto_omschrijving+"</div></div>"
}
function removeVergroting() {
 document.getElementById('vergroting_container').style.display='none';
 document.getElementById('content').style.overflow='auto';
}