nesipe

function checkForm(){
    var email = document.getElementById("email").value;
    var totalItems = document.getElementById("totalItems")
    var message = '<div class="alert alert-warning fade in">' +
      '<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>'+
      '<strong>Incorrect Email'+
      '</div>';
    var pattern = /^([a-z0-9_\.-])+@[a-z0-9-]+\.([a-z]{2,4}\.)?[a-z]{2,4}$/i;
    if(!pattern.test(email)){
     document.getElementById("errorBlock").innerHTML = message;
    }
    else
    document.getElementById("orderForm").submit();
}