var prefsLoaded=false;var defaultFontSize=100;var currentFontSize=defaultFontSize;var fontSizeTitle;var bigger;var smaller;var reset;var biggerTitle;var smallerTitle;var resetTitle;Object.append(Browser.Features,{localstorage:(function(){return('localStorage'in window)&&window.localStorage!==null;})()});function setFontSize(fontSize){document.body.style.fontSize=fontSize+'%';}
function changeFontSize(sizeDifference){currentFontSize=parseInt(currentFontSize,10)+parseInt(sizeDifference*5,10);if(currentFontSize>180){currentFontSize=180;}else if(currentFontSize<60){currentFontSize=60;}
setFontSize(currentFontSize);}
function revertStyles(){currentFontSize=defaultFontSize;changeFontSize(0);}
function writeFontSize(value){if(Browser.Features.localstorage){localStorage.fontSize=value;}else{Cookie.write("fontSize",value,{duration:180});}}
function readFontSize(){if(Browser.Features.localstorage){return localStorage.fontSize;}else{return Cookie.read("fontSize");}}
function setUserOptions(){if(!prefsLoaded){var size=readFontSize();currentFontSize=size?size:defaultFontSize;setFontSize(currentFontSize);prefsLoaded=true;}}
function addControls(){var container=document.id('fontsize');var content='<h3>'+fontSizeTitle+'</h3><p><a title="'+biggerTitle+'"  href="#" onclick="changeFontSize(2); return false">'+bigger+'</a><span class="unseen">.</span><a href="#" title="'+resetTitle+'" onclick="revertStyles(); return false">'+reset+'</a><span class="unseen">.</span><a href="#"  title="'+smallerTitle+'" onclick="changeFontSize(-2); return false">'+smaller+'</a></p>';container.set('html',content);}
function saveSettings(){writeFontSize(currentFontSize);}
window.addEvent('domready',setUserOptions);window.addEvent('domready',addControls);window.addEvent('unload',saveSettings);