// JavaScript Document
var tam = 10;
function mudaFonte(tipo,elemento){
	if (tipo=="mais") {
		if(tam<24) tam+=1;
		createCookie('fonte',tam,365);
	} else {
		if(tam>8) tam-=1;
		createCookie('fonte',tam,365);
	}
	var divTexto=document.getElementById('txtPrincipal')
	var elem = divTexto.getElementsByTagName("*")
	var i
	for(i=0;i<elem.length;i++){
		if(elem[i].className=='txtAlt'){
			elem[i].style.fontSize = tam+'px'	
		}
	}
}
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;
}