/*
Javascript to dynamically change font sizes on a web page.
Coded by Phil Nash of www.unintentionallyblank.co.uk
Cookies script courtesy of http://www.quirksmode.org/js/cookies.html
** Please don't remove this notice **
See http://www.unintentionallyblank.co.uk/2006/08/02/fontsizer/ for full details
To use the code, upload this file to your site's main directory and add the following lines to the element of your site:
If you want to use the php method to control the sizing on different pages then add the following to the element too:
If you would prefer to use the onLoad function of the body element, use this bit of code:
*/
function setFontByTag(e, v) {
/*
var elements = document.getElementsByTagName(e);
for(var i = 0; i < elements.length; i++) {
elements.item(i).style['fontSize'] = v;
}
}
*/
var shell = document.getElementById('shell');
shell.style.fontSize = v;
}
function createCookie(name,value,days)
{
if (days)
{
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else var expires = "";
document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name)
{
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++)
{
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
function eraseCookie(name)
{
createCookie(name,"",-1);
}
/*
var sizes = new Array('0.9', '1', '1.1', '1.2', '1.3');
var si = 1;
*/
function changeSize(inc) {
var sizes = new Array('0.9', '1', '1.1', '1.2', '1.3', '1.4');
var si = 1;
if(readCookie('fs')) { si = parseInt(readCookie('fs')); }
if (!document.getElementsByTagName) {return false;}
if (inc == '1') {
si+=1;
if (si>5) si=5;
}
else if (inc == '-1') {
si-=1;
if (si<0) si=0;
}
setFontByTag('div', sizes[si]+'em');
createCookie('fs',si,30);
}
function initFontSizer() {
if(readCookie('fs')) { var si = parseInt(readCookie('fs')); }
if (!document.getElementsByTagName) {return false;}
var sizes = new Array('0.9', '1', '1.1', '1.2', '1.3');
setFontByTag('div', sizes[si]+'em');
}
function resetSize() {
setFontByTag('div', '1em');
eraseCookie('fs');
}