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/* Cookie-based script to change font size */

var prefsLoaded = false;
var defaultFontSize = 71;
var currentFontSize = defaultFontSize;

function revertStyles() {
	currentFontSize = defaultFontSize;
	changeFontSize(71);
}

function changeFontSize(newFontSize) {
	currentFontSize = parseInt(newFontSize);
	if(currentFontSize > 100){
		currentFontSize = 100;
	} else if(currentFontSize < 60){
		currentFontSize = 60;
	}
	setFontSize(currentFontSize);
};

function setFontSize(fontSize) {
	var stObj = (document.getElementById) ? document.getElementById('content_area') : document.all('content_area');
	document.body.style.fontSize = fontSize + '%';
};
		
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 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;
};

window.onload = setUserOptions;
function setUserOptions() {
	if(!prefsLoaded){
		cookie = readCookie("fontSize");
		currentFontSize = cookie ? cookie : defaultFontSize;
		setFontSize(currentFontSize);
		prefsLoaded = true;
	}
};

window.onunload = saveSettings;
function saveSettings() {
	createCookie("fontSize", currentFontSize, 365);
}

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