var src_path = "https://components.viewpoint.com/MTSInstallers/MetaStream3.jar";
var cur_version = 2;

if (navigator.appName == "Netscape" && 
    parseInt(navigator.appVersion.substring(0,1)) >= 4 &&
    navigator.platform == "Win32" &&
    navigator.javaEnabled()) 
{
  trigger = netscape.softupdate.Trigger;
  if(trigger.UpdateEnabled()) 
  {
	do_update = true;
	if ( (mimeType = navigator.mimeTypes["application/x-mtx"]) != null && 
		  (plugin = mimeType.enabledPlugin) != null) 
	{
		descr_str = String(plugin.description);
		lastind = descr_str.lastIndexOf("r");
		if(lastind >=0 )
		{
			vers = parseInt(descr_str.substring(lastind+1).toString());
			if(!isNaN(vers) && vers >= cur_version)
			{
				do_update = false;
			}
		}
    }
    if(do_update)
	{
		trigger.StartSoftwareUpdate(src_path, trigger.DEFAULT_MODE);
    }
  }
}