function post_to_url(path, params, method) {
    method = method || "post";
    var form = document.createElement("form");
    form.setAttribute("method", method);
    form.setAttribute("action", path);
    form.setAttribute("target", "_blank");
    for (var key in params) {
        var hiddenField = document.createElement("input");
        hiddenField.setAttribute("type", "hidden");
        hiddenField.setAttribute("name", key);
        hiddenField.setAttribute("value", params[key]);
        form.appendChild(hiddenField);
    }
    document.body.appendChild(form);
    form.submit();
}
function postForm() {
    var action = "http://visitor.constantcontact.com/d.jsp";
    var method = "post";
    var params = new Array();
    params["m"] = "1101642579653";
    params["p"] = "oi";
    params["ea"] = document.getElementById("ea").value;
    post_to_url(action, params, method);
}