function getSilverlightVersion() { 
  var version = "Silverlight not installed"; 
  var container = null; 
  try { 
    var control = null; 
    if (window.ActiveXObject) { 
      control = new ActiveXObject("AgControl.AgControl"); 
    } 
    else { 
      if (navigator.plugins["Silverlight Plug-In"]) { 
        container = document.createElement("div"); 
        document.body.appendChild(container); 
        container.innerHTML = 
         '<embed type="application/x-silverlight" src="data:," />'; 
        control = container.childNodes[0]; 
      } 
    } 
    if (control) { 
      if (control.isVersionSupported("3.0")) { 
        version = "Silverlight 3.0"; 
      } else if (control.isVersionSupported("2.0")) { 
        version = "Silverlight 2.0"; 
      } else if (control.isVersionSupported("1.0")) { 
        version = "Silverlight 1.0"; 
      } 
    } 
  } 
  catch (e) { } 
  if (container) { 
    document.body.removeChild(container); 
  } 
  return version; 
}