button.js script of infomaniak

button.js

if (typeof jQuery === "undefined" || jQuery.fn.jquery !== '1.7.1') {
    var script_tag = document.createElement('script');
    script_tag.setAttribute("type","text/javascript");
    script_tag.setAttribute("src", "//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js");
    script_tag.onload = ml_load_libs;
    script_tag.onreadystatechange = function () {
        if (this.readyState == 'complete' || this.readyState == 'loaded') ml_load_libs();
    }
    document.getElementsByTagName("head")[0].appendChild(script_tag);
} else {
    ml_load_libs();
}

function ml_load_libs() {
    var libs = false;

    if (libs) {
        for (var i in libs)
        {
            var script_tag = document.createElement('script');
            script_tag.setAttribute("type","text/javascript");
            script_tag.setAttribute("src", libs[i]);

            if (i == libs.length-1) {
                script_tag.onload = ml_webform_button;
                script_tag.onreadystatechange = function () {
                    if (this.readyState == 'complete' || this.readyState == 'loaded') ml_webform_button();
                }
            }
            document.getElementsByTagName("head")[0].appendChild(script_tag);
        }
    } else {
        ml_webform_button();
    }
}


function ml_webform_button() {

//    $(document).ready(function(){


        jQuery('.ml-subscribe-button').each(function(){

            var $button = jQuery(this);
            var $form = jQuery(this).closest('form');

            //patikriname ar dar neuzbindintas submitas, jei kelis kartus itrauktas sitas JS
            if ($button.data('ml-click-bound') === undefined || !$button.data('ml-click-bound')) {
                $button.data('ml-click-bound', 1);

                var code = $form.data('code');
                if ( !$('#ml-iframe-' + code).length ) {
                    var iframe_src = $form.attr('action');
                    var $iframe = $('<iframe frameborder="0" allowtransparency="true" id="ml-iframe-' + code + '" class="ml-button-iframe" src="' + iframe_src + '">');
                    $iframe.appendTo('body');
                }
                var $iframe = $('#ml-iframe-' + code);


                $button.bind('click', function(e){
                    e.preventDefault();
                    mlShowIframe($iframe);
                });
            }

        });
//    });
}

window.addEventListener("message", receiveMessage, false);

function receiveMessage(event)
{
    //TODO: check event.origin
    var message_parts = event.data.split('-');
    if (message_parts.length > 1) {
        if (message_parts[0] == 'mlCloseIframe') {
            var code = message_parts[1];
            mlHideIframe($('#ml-iframe-' + code));
        }
    }
}

function mlShowIframe($iframe) {
    $iframe.fadeIn(200);
}

function mlHideIframe($iframe) {
    $iframe.fadeOut(200);
}