document.dynFontSizes = {"standard":"62.5%", "larger":"74%", "largest":"86%"};
document.dynFontActiveSize = "standard";

function setActiveSize(size){	
	var newSizeStr = (size==undefined)?"standard":size;
	var newSize = document.dynFontSizes[newSizeStr];	
	$("body").css("font-size", newSize);
	createCookie("style", newSizeStr, 365);
	return false;
}

function getActiveSize(size) {
	return document.dynFontActiveSize;
}

window.onload = function(e) {
	var cookie = readCookie("style");
	var prefSize = cookie ? cookie : "standard";
	document.activeSize = prefSize;
	setActiveSize(prefSize);
}
function setSizeFromCookie(){
	var cookie = readCookie("style");
	var prefSize = cookie ? cookie : "standard";
	document.activeSize = prefSize;
	setActiveSize(prefSize);
}

setSizeFromCookie();

function increaseText() {
	var newSize = (document.dynFontActiveSize=="standard")?"larger":"largest"
	setActiveSize(newSize);
	document.dynFontActiveSize = newSize;
	return false;
}

function decreaseText() {
	var newSize = (document.dynFontActiveSize=="largest")?"larger":"standard"
	setActiveSize(newSize);
	document.dynFontActiveSize = newSize;
	return false;
}

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;
}