var selBtn = null;

function expandDetails(btn, imgtag) {
  var details = document.getElementById("bigimgcell");   
  //var dview = '<a style="color:#000" href="http://www.show-360.cz/de_fsipopup.php?show_name=Fujitsu+Siemens+L20W+%2D+2&show_url=http%3A%2F%2Ferez%2Eshow%2D360%2Ecz%2Ferez4%2Ffsi4%2Ffsi%2Eswf%3Fcfg%3Dzakazky%2Fmca%5F70005079%5F02" target="_blank">3D Ansicht&nbsp;</a>';
  var resizeLink = '<a href="#" onclick="expandDetails(null,\'\')" style="color: black;"><img src="picsgen/bzoom_out.gif" border="0" width="34" height="25" align="right" alt="Auszoomen" /></a>'
  if (details != null) {
    if (selBtn == btn) {
      details.innerHTML = '<img src="picsgen/blank.gif" width="1" height="1" border="0" alt="">';  
      selBtn = null;
    } else if (btn == null) {
      details.innerHTML = '<img src="picsgen/blank.gif" width="1" height="1" border="0" alt="">';  
      selBtn = null;    
    } else {  
      details.innerHTML = '<br><a href="#" onclick="expandDetails(null,\'\')" style="color: black;">'+imgtag+'<br><br>'+resizeLink+'<br><br>';
      selBtn = btn;
    }
  } 
}