// JavaScript source code

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;
}

//when the page loads, see what the cookie for text size is so the correct image can be used
window.onload = function(e) {
  var v = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
	smImage=document.getElementById("smLetter");
	mdImage=document.getElementById("mdLetter");
	lgImage=document.getElementById("lgLetter");
	if (cookie=="smFont"){
		smImage.setAttribute("src","/_assets/images/shared/textSizeSmallActive.gif");
		mdImage.setAttribute("src","/_assets/images/shared/textSizeMed.gif");
		lgImage.setAttribute("src","/_assets/images/shared/textSizeLrg.gif");
	}
	else if (cookie=="mdFont"){
		smImage.setAttribute("src","/_assets/images/shared/textSizeSmall.gif");
		mdImage.setAttribute("src","/_assets/images/shared/textSizeMedActive.gif");
		lgImage.setAttribute("src","/_assets/images/shared/textSizeLrg.gif");
	}
	else if (cookie=="lgFont"){
		smImage.setAttribute("src","/_assets/images/shared/textSizeSmall.gif");
		mdImage.setAttribute("src","/_assets/images/shared/textSizeMed.gif");
		lgImage.setAttribute("src","/_assets/images/shared/textSizeLrgActive.gif");
	}
	else{
		smImage.setAttribute("src","/_assets/images/shared/textSizeSmallActive.gif");
		mdImage.setAttribute("src","/_assets/images/shared/textSizeMed.gif");
		lgImage.setAttribute("src","/_assets/images/shared/textSizeLrg.gif");
	}
}

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

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

function ChangeURL(newurl)
		{
			location.href = newurl;
		}

function switchImage(size){
		createCookie("style", size, 365);
		smImage=document.getElementById("smLetter");
		mdImage=document.getElementById("mdLetter");
		lgImage=document.getElementById("lgLetter");
		if (size=="smFont"){
			smImage.setAttribute("src","/_assets/images/shared/textSizeSmallActive.gif");
			mdImage.setAttribute("src","/_assets/images/shared/textSizeMed.gif");
			lgImage.setAttribute("src","/_assets/images/shared/textSizeLrg.gif");
		}
		if (size=="mdFont"){
			smImage.setAttribute("src","/_assets/images/shared/textSizeSmall.gif");
			mdImage.setAttribute("src","/_assets/images/shared/textSizeMedActive.gif");
			lgImage.setAttribute("src","/_assets/images/shared/textSizeLrg.gif");
		}
		if (size=="lgFont"){
			smImage.setAttribute("src","/_assets/images/shared/textSizeSmall.gif");
			mdImage.setAttribute("src","/_assets/images/shared/textSizeMed.gif");
			lgImage.setAttribute("src","/_assets/images/shared/textSizeLrgActive.gif");
		}
	}