//crystalens simulation buttons
function fontsizeNear() {
	setActiveStyleSheet('A++++');
}

function fontsizeMid() {
	setActiveStyleSheet('A++');
}

function fontsizeFar() {
	setActiveStyleSheet('A');
}

//Text size + - buttons
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;
 }
}

function setActiveStyleSheet(title) {
 var i, a, main;
 if (document.getElementsByTagName) {
 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;
 if (document.getElementsByTagName) {
 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() {
 return ('A');
}

var __isTRdomain;

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=/"+ (( __isTRdomain != undefined ) ? "; domain=.triprewards.com" : "");
}

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();
 createCookie("style", title, 365);
}

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

setActiveStyleSheet(title);