function checkNewsletters() {	
    s = trimSpace($("#txtNewsletters").val());
    if(s==""){
        alert('Please fill Email!');
        $("#txtNewsletters").focus();
        return false;
    }
    email = $("#txtNewsletters").val();
    if(email.length>0 && !isEmail(email)){
        alert('Invalid Email\nPlease Re-Enter!');
        $("#txtNewsletters").focus();
        return false;
    }
    return true;
}
function sendEmail() {		
    if (checkNewsletters()) {
        $.ajax({
            type: "POST",
            url: strPathTemplates + "modules/newsletters/do.sql.php",
            data: {
                'txtNewsletters': 	$('#txtNewsletters').val(),
                'lang': lang
            },
            success: function(data) {
                $('#divNewsletters').show();
                $('#txtNewsletters').val('');
            },
            error: function() {
                alert("Co van de khi xu ly. Vui long thu lai sau!");
            }
        });
    }
}