var xmlHttp
function showHint(str)
	{
	if (str.length==0)  
		{   document.getElementById("txtHint").innerHTML="";  
		return;  
		}
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)  
		{  
		alert ("Your browser does not support AJAX!");  
		return;  
		} 
	var url="gethint.asp";
	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;
	    }
	}
	
	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;
	 }