Utils.prototype.openWindowWithPost = function(url, windowoption, name, params) {
    if (!name) {
        name = '_blank';
    }

    var form = $("<form id='exportForm' method='post' action='" + url + "' target='" + name + "'></form>");
    for ( var propertyName in params) {
        html = $('<input type="hidden" name="' + propertyName + '" value="' +  params[propertyName] + '">');
        form[0].appendChild(html[0]);
    }

        console.log(form);
    document.body.appendChild(form[0]);
        document.getElementById("exportForm").submit();
    document.body.removeChild(form[0]);
}