function ck_browser()
{
 var clintAgent = navigator.userAgent;
 var clintName = navigator.appName;
 if ( clintName.indexOf("Netscape") != -1 ) {
  if ( clintAgent.indexOf("Mozilla/4") != -1 )
   return 14;
 else
   return 10;
 }
 else {
  if ( clintAgent.indexOf("MSIE 6") != -1 )
   return 106;
  else if ( clintAgent.indexOf("MSIE 5") != -1 )
   return 105;
  else if ( clintAgent.indexOf("MSIE 4") != -1 )
   return 104;
  else
   return 100;
 }
}