function setActiveStyleSheet(title) {
  var i, a, main;
  if(title!=""){
  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();
 	//var expires = "; expires="+date.toGMTString();
 //}
  //else expires = "";
  //document.cookie = name+"="+value+expires+"; path=/";
  document.cookie = name+"="+value+"; expires=Monday, 04-Apr-2099 05:00:00 GMT; 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 setFontSize(psize){
	
	var b = document.getElementsByTagName("body")[0];
	
	if(b){
		switch(psize){
		case 'large': 
			b.style.fontSize   = "26px";
		break;
		
		default: 
			b.style.fontSize   = "16px";
		break;
		
		}
		createCookie("cfontsize", psize, 9999);
	}
}


window.onload = function(e) {
	var cookie = readCookie("trcstyle");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
	var cfontsize = readCookie("cfontsize");
	setFontSize(cfontsize);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("trcstyle", title, 9999);
}

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

//var cfontsize = readCookie("cfontsize");
//setFontSize(cfontsize);