function sendMail() {
                var name = document.getElementById("txtName");
                var company = document.getElementById("txtCompany");
                var email = document.getElementById("txtEmail");
                var phone = document.getElementById("txtPhone");
                var info = document.getElementById("txtInfo");

                if (name.value.length < 1) {
                    errHandler(name, "nameÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
                    return false;
                }
                else if (company.value.length < 1) {
                    errHandler(company, "Company¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
                    return false;
                }
                else if (email.value.length < 1) {
                    errHandler(email, "email¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
                    return false;
                }
                else if (phone.value.length < 1) {
                    errHandler(phone, "phone number¸¦ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
                    return false;
                }
                else if (info.value.length < 1) {
                    errHandler(info, "³»¿ëÀ» ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
                    return false;
                }                
                else if (!email.value.match(/^(\w+)@(\w+)(\.(\w+)){1,}$/ig))
                {
                    errHandler(email, "email Çü½Ä¿¡ ¸Â°Ô ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
                    return false;
                }
                else if (phone.value.match(/[^0-9]/gi))
                {
                    errHandler(phone, "¼ýÀÚ¸¸ ÀÔ·ÂÇØ ÁÖ¼¼¿ä");
                    return false;
                }
                else {

                    var param = "name=" + name.value + "&company=" + company.value + "&email=" 
                    + email.value + "&phone=" + phone + "&info=" + info.value;
                    
                    sendPost("/SendEmail.aspx", param);

					document.getElementById("spanEmailSend").style.display = "none";
					document.getElementById("spanEmailSending").style.display = "";

                    return true;
                }
            }

            function errHandler(obj, msg) {
                alert(msg);
                obj.select();
                obj.focus();
            }