function ValidateEmail(email) {  
            var RegExEmail = /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;
            alert(document.getElementById(this));
alert(RegExEmail.test(email)); 
        }