$(document).ready(function()
{
  $("#frmSS15").validate(
  {
		rules:
		{
			"CustomFields[2]": "required",
			email:
			{
				required: true,
				email: true
			},
			"CustomFields[3]": "required"
		},
		messages:
		{
			"CustomFields[2]": "Please enter your first name",
			email:
			{
				required: "Please enter your email address",
				email: "Please enter a valid email address"
			},
			"CustomFields[3]": "Please enter your last name"
		}
	});

});