/* NOTE default stylesheet is analogous with stylesheet A. */

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;
  }
}

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;
  }
}

/* changes the style sheet used
	title: the preferred style sheet
*/
function setActiveStyleSheet(title) {
  var i, a, main;
  /*loop through the list of*/
  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;
}

/*this defines the default style sheet*/
function getPreferredStyleSheet() {
  return ("A");
}

/*fired off onUnload*/
function createCookie(name,value,days) {
	/*alert('making a cookie');*/
  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=/";
}

/*fired off onLoad*/
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;
}

/*on page load read the cookie [if exists] storing style sheet preference [else] set getpreferedStyle*/
window.onload = function(e) {
  getPreferredStyleSheet();
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();/*[from cookie|default]*/
  setActiveStyleSheet(title);
}

/* on page unload set a cookie to store the preferred style sheet*/
window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

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

if (title == 'null') {
	 alert('title is null so getting default');
  title = getPreferredStyleSheet();

}*/

/*setActiveStyleSheet(title);*/


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function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}
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