//FW Resize Font Javascript// /** * FW Resize Font Javascript * @package Joomla * @copyright Copyright (C) 2006 Futureworkz Pte. Ltd. All rights reserved. * @license http://www.gnu.org/copyleft/gpl.html GNU/GPL * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ var tags = new Array('div','p','b','strong','em','a','h1','h2','h3','pre','sub','sup','i','th','cp','ul','ol','li','dt','dd','input'); var defaultSize = 15; var resizeCounter = 0; var increment = 2; function adjustFontSizes(resize) { // adjust fontSize of all appropriate elements by resize * increment var docBody; var i; var allTags; var k; var size; // if (!document.getElementById) { return; } if (resize == 0) { return; } if (resize < 0 && resizeCounter + resize < -2) { // if this size reduction would take us more than two steps below normal, do nothing return; } docBody = document.getElementsByTagName('body')[0]; // get the first and only element for (i = 0; i < tags.length; i++) { // for each listed tag name allTags = docBody.getElementsByTagName(tags[i]); // get all elements inside body having this tag name for (k = 0; k < allTags.length; k++) { // for each element size = parseInt(allTags[k].style.fontSize.substring(0, allTags[k].style.fontSize.length - 2)); // assumes fontSize value has two-letter suffix e.g. 'px' if (!size) { size = defaultSize; } allTags[k].style.fontSize = (size + resize * increment) + 'px'; // do arithmetic, then concatenate } } resizeCounter += resize; } function resetFontSizes() { adjustFontSizes(-resizeCounter); } //cookie functions for remember the font sizes across pages function createCookie(name, value, days) { var expires; var date; if (days) { date = new Date(); date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000)); expires = "; expires=" + date.toGMTString(); } else { expires = ""; } document.cookie = name + "=" + value + expires + "; path=/"; } function readCookie(name) { // return value of cookie with name, else null var nameEQ = name + "="; var ca = document.cookie.split(';'); // get array of cookie name=value strings var i; var c; // for (var i = 0; i < ca.length; i++) { c = ca[i]; while (c.charAt(0) == ' ') { // trim spaces from LHS c = c.substring(1, c.length); } if (c.indexOf(nameEQ) == 0) { // if it starts with "name=" return c.substring(nameEQ.length, c.length); // return the value } } return null; // iff no match for name } function setUserOptions() { var cookie; // if (cookie = readCookie('FWresizeFont')) { adjustFontSizes(parseInt(cookie)); // alert('fetched resizeCounter = ' + parseInt(cookie)); } } function saveSettings() { createCookie("FWresizeFont", resizeCounter, 365); // alert('saved resizeCounter = ' + resizeCounter); } // "push" these handlers... window.onload = chainFunc(window.onload, setUserOptions); window.onunload = chainFunc(window.onunload, saveSettings);