function fontsizeup() {
  active = getActiveStyleSheet();
  switch (active) {
//    case 'A--' : 
//      setActiveStyleSheet('A-');
//      break;
//    case 'A-' : 
//      setActiveStyleSheet('A');
//      break;
    case 'A' : 
      setActiveStyleSheet('A+');
      break;
    case 'A+' : 
      setActiveStyleSheet('A+');
      break;
//    case 'A++' :
//      break;
    default :
      setActiveStyleSheet('A');
      break;
  }
  tblSF.style.display='none';
  tblLF.style.display='block';
 }

function fontsizedown() {
  active = getActiveStyleSheet();
  switch (active) {
//    case 'A++' : 
//      setActiveStyleSheet('A+');
//      break;
    case 'A+' : 
      setActiveStyleSheet('A');
   
      break;
    case 'A' : 
      setActiveStyleSheet('A');
      break;
//    case 'A-' : 
//      setActiveStyleSheet('A--');
//      break;
//    case 'A--' : 
//       break;
    default :
      setActiveStyleSheet('A');
      break;
  }
  tblLF.style.display='none';
  tblSF.style.display='block';
}

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;
    }
  }
  if (frames['poll']) {
	for(i=0; (a = frames['poll'].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");
	}
  }
  for(i=0; (a = frames['poll'].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() {
  return ('A');
}

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);
  if (title.indexOf("+") != -1 && document.getElementById('tblLF'))
	tblLF.style.display='none';
  else if (document.getElementById('tblSF'))
	tblSF.style.display='none';
}

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

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
if (title == 'null') {
  title = getPreferredStyleSheet();
}

setActiveStyleSheet(title);