(function($)
{
	jQuery(document).ready(function() {
		$('#acess-contraste').click(function(e)
		{
			e.preventDefault();
			$('link[@rel*=style][title=contraste]').each(function(i) 
			{
				this.disabled = false;	
			});
            createCookie('style', 'contraste', 365);
		}).blur();
		$('#acess-normal').click(function(e)
		{
			e.preventDefault();
			$('link[@rel*=style][title=contraste]').each(function(i) 
			{
				this.disabled = true;
			});
            eraseCookie('style');
		}).blur();
        $("#acess-a-mais").click(function(e){e.preventDefault();fontSize("aumentar")}).blur()
        $("#acess-a-menos").click(function(e){e.preventDefault();fontSize("diminuir")}).blur()
        $("#acess-a").click(function(e){e.preventDefault();fontSize("padrao")}).blur()
		var c = readCookie('style');
		if (c) {
			$('link[@rel*=style][title=contraste]').each(function(i) 
			{
				this.disabled = false;
			});	
		}
	});
})(jQuery);

// cookie functions http://www.quirksmode.org/js/cookies.html
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);
}

function fontSize(action, container){
    container = typeof(container) != 'undefined' ? container : "body" //se não for especificado um container será "div.texto"
	container = "body"
    baseSize = parseInt(jQuery(container).css("font-size")) //extraímos o font-size padrão, tomando como base o p do nosso container

	$fs = parseInt(jQuery(container).css("font-size"))
	if(action=="aumentar" && baseSize < 20) $fs+=2
	else if(action=="diminuir" && baseSize > 9) $fs-=2
	else if(action=="padrao") $fs=12
	jQuery(container).css("font-size", $fs)
}