function menu( el ) {
	el.blur();
	var pa = el.parentNode;
	if ( pa.className.indexOf("expand") != -1 ) {
		pa.className = "prueba";
	} else {
		pa.className = "expand";
	}
	var submenu = pa.nextSibling;
	if ( submenu.nodeType != 1 ) {
		submenu = submenu.nextSibling;
	}
	if ( submenu.className.indexOf("submenu") == -1 ) {
		return;
	}
	submenu.style.display = ( pa.className.indexOf("expand") != -1 )?'none':'';
}




var Ac = {
	size:12,
	letraMaior:function() {
		if ( this.size < 16 ) {
			this.size++;
			document.body.style.fontSize = this.size+'px';
		}
	},
	letraMenor:function() {
		if ( this.size > 11 ) {
			this.size--;
			document.body.style.fontSize = this.size+'px';
		}
	},
	contraste:function() {
		setActiveStyleSheet('Acessível')
	},
	normal:function() {
		setActiveStyleSheet('Padrão');
	},
	impressao:function() {
		setActiveStyleSheet('Impressão');
	}

}


function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

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 = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  if (title != 'Impressão') {
	  createCookie("style", title, 365);
  }
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);