/*global window */ // Set up URL of proxy document residing in VW CMS var vwd4_proxyURL = 'http://it.volkswagen.com/it/guida_all_acquisto/usato_first_classtest/stock_locator.e16_page_proxy.html'; // Create iframe to hold proxy document document.write(''); // Check for browser var vwd4_userAgent = navigator.userAgent.toLowerCase(); // Set if window has been loaded in IE or Safari var vwd4_loaded; var vwd4_resized; /** * Send message to iFrame * @param {Object} message */ function vwd4_sendMessageToiFrame(message){ var elem = document.getElementById('vwd4_parentProxy'); elem.contentWindow.location = vwd4_proxyURL + "#" + message; // toggle the iFrame's size to indicate there is a message ready to be read elem.width = elem.width > 50 ? 50 : 100; } /** * Inform the parent page that the size has changed */ function vwd4_bodySizeChanged(){ var message = "height="; // read required document height if (vwd4_userAgent.indexOf("msie") != -1) { message = message + Number(document.body.scrollHeight); } else { message = message + Number(document.body.offsetHeight); } // Send a message to the parent via the proxy vwd4_sendMessageToiFrame(message); } // Attach listener to to capture changes in size window.onload = function(){ // reset iFrame height to 10px to prevent wrong height in Safari if (vwd4_userAgent.indexOf("safari") != -1) { vwd4_sendMessageToiFrame("height=10"); } else { // store info about resize cause by onload event in MSIE if (vwd4_userAgent.indexOf("msie") != -1) { vwd4_loaded = true; } vwd4_bodySizeChanged(); } }; window.onresize = function(){ // check if resize is actually caused by onload event and ignore it if (vwd4_loaded) { vwd4_loaded = false; } else { if (vwd4_userAgent.indexOf("safari") != -1) { /* * check if resize was triggered before * this prevents infinite loop caused by resize in Safari */ if (vwd4_resized) { // ignore double resize action vwd4_resized = false; } else { // store resize action and check for new height vwd4_resized = true; setTimeout(function(){ vwd4_bodySizeChanged(); }, 0); } } else { // all other browsers proceed normally vwd4_bodySizeChanged(); } } };