function checkMail(mail){
    var er = new RegExp(/^[A-Za-z0-9_\-\.]+@[A-Za-z0-9_\-\.]{2,}\.[A-Za-z0-9]{2,}(\.[A-Za-z0-9])?/);
    
    if(typeof(mail) == "string"){
        if(er.test(mail)){ return true; }
    }else if(typeof(mail) == "object"){
        if(er.test(mail.value)){
            return true;
        }
    }else{
        return false;
    }
}

function CadastraNewsletter(){

    var strEmail = document.getElementById("txtEmail").value;
    var strNome = document.getElementById("txtNome").value;
    
    if(strNome == ""){
    
        window.alert("O Campo nome deve ser preenchido");
        document.getElementById("txtNome").focus();
        return
        
    
    }
    
    if(checkMail(strEmail)){
    
        WebSite.newsletter.InsereNewsletter(strEmail, strNome, cb_CadastraNewsletter);
            
    }else{
    
        window.alert("E-mail incorreto");
    
    }
            
}
        
        
function cb_CadastraNewsletter(response){

    window.alert(response.value);

}