function GetXmlHttpObject()
{
	var xmlHttp=null;
	try
  	  {
  		// Firefox, Opera 8.0+, Safari
  		xmlHttp=new XMLHttpRequest();
           }
	catch (e)
        {
  		// Internet Explorer
  		try
    		{
    		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    		}
  		catch (e)
    		{
    		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    		}
  	}
	return xmlHttp;
}

function showHint(str)
{
	var xmlHttp=null;
 	var xmlHttp=GetXmlHttpObject();
	if (str.length==0)
  	{
  		document.getElementById("txtHint").innerHTML="";
  		return;
  	}

	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
  	{
  		alert ("Your browser does not support AJAX!");
  		return;
  	}

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

	var url="getdate.php";
	url=url+"?char="+str;
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}