function validate(fieldName, isRequired, validationType) 
{
	return $.ajax({
		url: "lib/ajax_lib.php",
		type: "POST",
		dataType: "json",
		data: 'validationType='+validationType+'&fieldValue='+document.getElementById(fieldName).value+'&isRequired='+isRequired,
		async: false
					
		}).responseText;

}