function isSlideEffectAllowed(){
  var retValue    = true;
  var bVers       = 0;
  var ua          = navigator.userAgent.toLowerCase();
  var bName       = navigator.appName.toLowerCase();
  var bAppVers    = parseInt(navigator.appVersion);

  if (bName.indexOf("explorer")>0){
    var msie = ua.indexOf("msie");
    if (msie>-1){
      bVers = parseInt(ua.substring(msie+5, msie+6)); 
      if(bVers<6){
        retValue = false;
      }
    }
  }else{
    if ((bName.indexOf("netscape")>=0)&&(ua.indexOf("firefox")==-1)){
      retValue = false;
    }  
  }
  return retValue;
}