/** * State | Description * ------------------- * 0 | The request is not initialised * 1 | The request has been set up * 2 | The request has been sent * 3 | The request is in process * 4 | The request is complete */ var BASE_DOMAIN = 'http://' + document.domain + '/'; var EMPTY_STRING = ''; var ONE_SPACE = ' '; var xmlHttp = null; function getXMLHttp() { var request = null; try { // Firefox, Opera 8.0+, Safari request = new XMLHttpRequest(); } catch (e) { // Internet Explorer try { request = new ActiveXObject('Msxml2.XMLHTTP'); } catch (e) { request = new ActiveXObject('Microsoft.XMLHTTP'); } } return request; } /** * The xmlHttpStateChanged() function must be implemented in a separate *.js * file. */ function sendRequest(url, mimeType) { xmlHttp = getXMLHttp(); if (xmlHttp == null) { alert('Your browser does not support AJAX!'); } else { try { xmlHttp.overrideMimeType(mimeType); } catch (e) { // Not supported by IE7 } xmlHttp.onreadystatechange = xmlHttpStateChanged; xmlHttp.open('get', url, true); xmlHttp.send(null); } return; } /** * Call from the onload event of the body tag to open bookmarked pages; the * loadBookmarkedProduct() function is declared and managed by any JavaScript * file related to a specific product page. */ function useBookmark() { var bookmarkName = getURLParam('bookmark'); if (bookmarkName == null) { bookmarkName = EMPTY_STRING; } loadBookmarkedProduct(bookmarkName); return; } /** * Utility function to get a URL parameter value by name. Supports lowercase * parameter names and values only. */ function getURLParam(paramName) { var paramValue = EMPTY_STRING; var docHref = window.location.href.split('#')[0]; if (docHref.indexOf('?') > -1) { var query = docHref.substr(docHref.indexOf('?') + 1).toLowerCase(); var paramPairs = query.split('&'); for (var i = 0; i < paramPairs.length; i++) { if (paramPairs[i].indexOf(paramName.toLowerCase() + '=') > -1) { var paramPair = paramPairs[i].split('='); paramValue = paramPair[1]; break; } } } return unescape(paramValue); } /** * Use when embedding a document with its own DOCTYPE, or other unwanted head * tags. */ function cleanNestedDocument(docText) { var docTemp = docText; docTemp = docTemp.replace(/<(body|BODY)[\s\n\r\w="]+>/, ''); docTemp = docTemp.replace(/<\/(body|BODY)[\s\n\r\w="]+>/, ''); var indexBody = docTemp.indexOf('') + 6; var indexBodyClose = docTemp.indexOf(''); var cleanText = docTemp.substring(indexBody, indexBodyClose); return cleanText; } /** * Creates and returns an XML tree document from the xmlHttp object's response * property. */ function getXmlTree() { var rawDoc = xmlHttp.responseText; var xmlDoc = xmlHttp.responseXML.documentElement; if (window.ActiveXObject) { xmlDoc = new ActiveXObject('Microsoft.XMLDOM'); xmlDoc.async = 'false'; xmlDoc.loadXML(rawDoc); } else { var parser = new DOMParser(); xmlDoc = parser.parseFromString(rawDoc, 'text/xml'); } return xmlDoc; }