if(navigator.userAgent.indexOf('Linux123') != -1 ){
    //alert();

document.getElementById("errordiv").style.display='unset';
window.console = {
  log: function(str){
    var node = document.createElement("div");
    node.appendChild(document.createTextNode(str));
    document.getElementById("errordiv").appendChild(node);
  }
}

window.onerror = console.log;
console.error = console.debug = console.info =  console.log;
    console.log(navigator.userAgent);
}