// Create an instance of the XML HTTP Request object
	var oXMLHTTP1;
	
	function CheckIfBlackListed(stringTxt, errMsg) {

		// Prepare the XMLHTTP object for a HTTP POST to our validation ASP page
		if (window.XMLHttpRequest) { // Mozilla, Safari, ...
            oXMLHTTP1 = new XMLHttpRequest();
            if (oXMLHTTP1.overrideMimeType) {
                oXMLHTTP1.overrideMimeType('text/xml');
                // See note below about this line
            }
        } else if (window.ActiveXObject) { // IE
            try {
                oXMLHTTP1 = new ActiveXObject("Msxml2.XMLHTTP");
            } catch (e) {
                try {
                    oXMLHTTP1 = new ActiveXObject("Microsoft.XMLHTTP");
                } catch (e) {}
            }
        }
		
		var sURL = "../scripts/checkBlackList.php?txt=" + encodeURIComponent(getObj(stringTxt).value);
					
		// Define an event handler for processing
		oXMLHTTP1.onreadystatechange = function() { managestatechange1(stringTxt, errMsg); };
		oXMLHTTP1.open( "GET", sURL, true);
		
		// Execute the request
		oXMLHTTP1.send(null);
	}

	function managestatechange1(stringTxt, errMsg) {
		if (oXMLHTTP1.readyState == 4) {
			if (oXMLHTTP1.responseText == "1") {
			
				getObj('hddBlackListed').value = "1";
				getObj(stringTxt).style.color = "#FF0000";				
				getObj(stringTxt).select();	
				getObj(stringTxt).focus();
				
				alert(errMsg);
				
				getObj('hddBlackListed').value = "0";
				
				return false;
			}
			else {
					
				getObj('hddBlackListed').value = "0";
				getObj(stringTxt).style.color = "#808080";
                
				return true;
			}
		}		
	}
	
	// Check if town is valid
	function checkBlackList(field, id, msg)
	{
		if(getObj(field).value!='' && getObj(id).value=="0" && getObj('hddBlackListed').value=="0")
		{
			CheckIfBlackListed(field, msg);
		}
	}