function whois(domain_name) {
    var request = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("MSXML2.XMLHTTP.3.0");
    request.setRequestHeader("Content-Type", "text/plain");
    request.open('GET','http://test.enom.com/interface.asp?command=check&tld=com&sld='+domain_name,false);
    alert(request.send());
    alert(request.responseText);
  }