///////////////////////USERNAME CHECKING///////////////////////////////////
var xmlHttp;

function showHint_reg(str)
{
	
	if (str.length > 0)
	{ 
		var i;
		
		var j;
		var whitespace = "\t\n\r";
		var userID= document.frm.userId.value;
		
		var s= userID;
		var flag =0;
		
		for (i = 0; i < s.length; i++)
		{
			// Check that current character isn't whitespace.
			var c = s.charAt(i);
			if (c == " ")
			{
				var flag= 1;
				break;
		    }
		}
		
		if(flag == 1)
		{
				alert("White spaces within the character is not allowed");
				document.frm.userId.focus();
				document.frm.userId.select();
				return false;
		}
		
		/**************************************************************/
		
		var url="gethint.php?member_nm=" + str
		xmlHttp=GetXmlHttpObject1(stateChanged1)
		xmlHttp.open("GET", url , true)
		xmlHttp.send(null)
		
	} 
	else
	{ 
		//document.getElementById("txtHint").innerHTML=""
		document.getElementById("txtHint").style.visibility='hidden';
	} 
} 

function stateChanged1() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(xmlHttp.responseText!='')
		{
			document.getElementById("txtHint").style.visibility='';
			document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
			document.frm.userId.select();
		}
		else
		{
			document.getElementById("txtHint").style.visibility="hidden";
		}
	//document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
	} 
} 

function GetXmlHttpObject1(handler)
{ 
	var objXmlHttp=null
	
	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		alert("This example doesn't work in Opera") 
		return 
	}
	if (navigator.userAgent.indexOf("MSIE")>=0)
	{ 
		var strName="Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
		{
			strName="Microsoft.XMLHTTP"
		} 
		try
		{ 
			objXmlHttp=new ActiveXObject(strName)
			objXmlHttp.onreadystatechange=handler 
			return objXmlHttp
		} 
		catch(e)
		{ 
			alert("Error. Scripting for ActiveX might be disabled") 
			return 
		} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		objXmlHttp=new XMLHttpRequest()
		objXmlHttp.onload=handler
		objXmlHttp.onerror=handler 
		return objXmlHttp
	}
} 


//////////////////////////////////////////////////////////////////////////