var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;

function validateRegistrationForm()
{
	var inputs = $("input[class=mandatory]");
	var notValid = false;

	for ( var i = 0; i < inputs.length; i++ )
	{
		var input = inputs[i];
		if ( $(input).val() == "" )
		{
			notValid = true;
		}
	}

	if ( notValid )
	{
		alert("Fields marked with an asterisk (*) are mandatory.");
		return false;
	}

	if ( !emailPattern.test($("#email").val()) )
	{
		alert("You have entered valid e-mail address.");
		return false;
	}
}