var xmlhttp1;

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}

function checkuserid(str)
{
if (str.length==0)
  {
  //document.getElementById("userhint").innerHTML="*";
  return;
  }

xmlhttp1=GetXmlHttpObject();
if (xmlhttp1==null)
  {
  alert ("Your browser does not support XMLHTTP!");
  return;
  }
var url="gethint_login.php";
url=url+"?q="+str;
url=url+"&sid="+Math.random();
xmlhttp1.onreadystatechange=stateChanged1;
xmlhttp1.open("GET",url,true);
xmlhttp1.send(null);
}


function stateChanged1()
{
if (xmlhttp1.readyState==4)
  {
  document.getElementById("userhint").innerHTML=xmlhttp1.responseText;
  }
}

function checkemail(str)
{
if (str.length==0)
  {
  //document.getElementById("txtHint").innerHTML="";
  return false;
  }
  else if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(str))
{
	document.getElementById("txtHint").innerHTML="";
return false;
}
  
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Your browser does not support XMLHTTP!");
  return;
  }
var url="gethint.php";
url=url+"?q="+str;
url=url+"&sid="+Math.random();
xmlhttp.onreadystatechange=stateChanged;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function stateChanged()
{
if (xmlhttp.readyState==4)
  {
  document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
  }
}