function CheckPoNoByRC(element)
            {
                var input = "<Root><Type>CurrencyPoNo</Type><Currency>" + element.value + "</Currency></Root>";
                
                //var xmlHttp  = new ActiveXObject("Microsoft.XMLHTTP");by brant
                var xmlHttp;
                    if(window.ActiveXObject)
                    {
                      xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
                    }
                    else if(window.XMLHttpRequest)
                    {
                     xmlHttp=new XMLHttpRequest();
                     }
                xmlHttp.open("POST", "BQYFORM104CheckDataXMLHttpPost.aspx", false);
                xmlHttp.onreadystatechange=callback;
                xmlHttp.send(input);
                //xmlHttp.onreadystatechange=callback();
                //xmlHttp.send(input);
//                var result = xmlHttp.responseText;
//                alert(result);
//                document.getElementById("lblPONumber").innerHTML = result;
            }
            
            function callback() 
            {
                if(xmlHttp.readyState==4) 
                {
                    var result=xmlHttp.responseText;
                    document.getElementById("lblPONumber").innerHTML=result;
                }
             }