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;
}

function setFonts(whatToDo) {
	if (whatToDo == 'tsc_style') {
		document.getElementById('text_sm').style.display = "block";
		document.getElementById('text_lg').style.display = "none";
	} else {
		document.getElementById('text_sm').style.display = "none";
		document.getElementById('text_lg').style.display = "block";
	}
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
  //updateSelectList(cookie);
  updatetextsizer(cookie);
}

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

function updatetextsizer(cookie){
	
	if (cookie !== 'null') {
		var stylename = title;
	} else {
		var stylename = "tsc_style";
	}
	
	if (stylename == 'tsc_large') {
			//had large preset, set button to large
			setFonts('tsc_large');

	}

}

function updateSelectList(cookie){
	
	var selId = "sizes";
	var defaultstyle = "default";
	var selObj = document.getElementById(selId);
	
	if (cookie !== 'null') {
		var stylename = title;
	} else {
		var stylename = defaultstyle;
	}
	
	for (i=0; i<selObj.options.length; i++) {
		if (selObj.options[i].value == stylename) {
			selObj.options[i].selected = 'ture';
			return null;
		}
  	}
  	return null;
}


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