<!--
function changeimg (selected) {
  exp_comm = document.getElementById('commercial');
  exp_finc = document.getElementById('financial');
  exp_glob = document.getElementById('global');
  exp_engr = document.getElementById('engineered');
  exp_resi = document.getElementById('residential');
  exp_trav = document.getElementById('travel');
  exp_spor = document.getElementById('sports'); 
  
  exp_comm.style.display = "none";
  exp_finc.style.display = "none";
  exp_glob.style.display = "none";
  exp_engr.style.display = "none";
  exp_resi.style.display = "none";
  exp_trav.style.display = "none";
  exp_spor.style.display = "none";  
  
  exp_selected = document.getElementById(selected);
  exp_selected.style.display = "block";
}
-->