function initiate()
{
   document.getElementById("list").innerHTML = '<img src="loader.gif" />';
   var xmlhttp;
   if (window.XMLHttpRequest)  {// code for IE7+, Firefox, Chrome, Opera, Safari
   xmlhttp=new XMLHttpRequest();
   }
   else  {// code for IE6, IE5
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
   }

xmlhttp.onreadystatechange=function()  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)    {
    document.getElementById("list").innerHTML = xmlhttp.responseText;
    }
  }

xmlhttp.open("GET","scripts/fetchUsers.php",true);
xmlhttp.send();

}

function submitUser(element)
{
  element.disabled = true;
  element.value = "saving";
  var user = document.getElementById("userName").value;


   var xmlhttp;
   if (window.XMLHttpRequest)  {// code for IE7+, Firefox, Chrome, Opera, Safari
   xmlhttp=new XMLHttpRequest();
   }
   else  {// code for IE6, IE5
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
   }

xmlhttp.onreadystatechange=function()  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)    {
    if(xmlhttp.responseText!="")
      alert(xmlhttp.responseText);

    document.getElementById("userName").value = "";
    element.disabled = false;
    element.value = "alright!"
    initiate();
    }
  }

xmlhttp.open("GET","scripts/submitUser.php?user="+user,true);
xmlhttp.send();


}