// Validator of form fields
// Get field name and value
// for validation 
function validate_Field(field_name, field_value)
	{
	
		var field_name = field_name;
		var field_value = field_value;
		var field_msg = field_name+"msg";
		
		validate_This(field_name, field_value);
		
		function validate_This(field_name, field_value)
			{

				validator_httpObject = getHTTPObject();    
				if (validator_httpObject != null) 
					{   
						url = "phpajax/validator.php";
						params = "field_name="+field_name+"&field_value="+field_value;
						validator_httpObject.open("POST", url, true); 
						validator_httpObject.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
						validator_httpObject.setRequestHeader("Content-length", params.length);
						validator_httpObject.setRequestHeader("Connection", "close");       
						validator_httpObject.send(params);             
						validator_httpObject.onreadystatechange = validation_Status;
					}
			}
	
		// Return Validation Status
		function validation_Status()
			{    
				if(validator_httpObject.readyState == 4)
					{      
						var validator_Response = validator_httpObject.responseText;
						
						document.getElementById(field_msg).innerHTML = validator_Response;
						
					} 
			}
	}