<!--
// ----------------------------------------------
// StyleSwitcher functions written by Paul Sowden
// http://www.idontsmoke.co.uk/ss/
// - - - - - - - - - - - - - - - - - - - - - - -
// For the details, visit ALA:
// http://www.alistapart.com/stories/alternate/

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=/;domain=lab.codlibrary.org";
  document.cookie = name+"="+value+expires+"; path=/;domain=codlibrary.org";
}
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();
setActiveStyleSheet(title);

// Simple date functions

function copyDate () {
	var mydate=new Date()
	var year=mydate.getYear()
	if (year < 1000)
	{
		year+=1900
	}
	var object=document.getElementById('copyDate');
	object.innerHTML=''
	object.innerHTML += year + " ";
	}
	
function updateDate () {
	var months = new Array(13);
	months[1] = "January";
	months[2] = "February";
	months[3] = "March";
	months[4] = "April";
	months[5] = "May";
	months[6] = "June";
	months[7] = "July";
	months[8] = "August";
	months[9] = "September";
	months[10] = "October";
	months[11] = "November";
	months[12] = "December";
	var dateObj = new Date(document.lastModified)
	var lmonth = months[dateObj.getMonth() + 1]
	var date = dateObj.getDate()
	var fyear = dateObj.getYear()
	if (fyear < 2000) 
	fyear = fyear + 1900
	var object=document.getElementById('updateDate');
	object.innerHTML=''
	object.innerHTML += lmonth + " " + date + ", " + fyear;
}

-->