function navMouseOvers(container) {
	var navDiv = document.getElementById(container);
	var imgLinks = navDiv.getElementsByTagName('img');

	for (var i = 0; i < imgLinks.length; i++) {
		
		var imgSrc = imgLinks[i].src.substring(0, imgLinks[i].src.lastIndexOf('.'));
		imgSrc    += 'Hover.png';
		imgSrc    = imgSrc.replace('Over','');
		imgSrc    = imgSrc.replace('Green','Black');
		imgSrc    = imgSrc.replace('White','Black');
		imgLinks[i].imgSrc = imgSrc;
		imgLinks[i].origSrc = imgLinks[i].src;
		
		imgLinks[i].onmouseover = function() {
			this.src = this.imgSrc;
		}
		imgLinks[i].onmouseout = function() {
			this.src = this.origSrc;
		}
	}
}

function showPortfolioImage(image, description) {

	if(document.getElementById('portfolioImage')) {
		document.getElementById('portfolioImage').src = image;
		document.getElementById('portfolioImageDescription').innerHTML = description;
	}
}

function addHandler(whichEvent, whichObject, attachThis){

	if(document.addEventListener){

		whichObject.addEventListener(whichEvent, attachThis, 0);
	}
	else if(document.attachEvent){

		whichObject.attachEvent("on"+whichEvent, attachThis);
	}
}

function findFooterLinks() {
	
	if(document.getElementById('colourLinks')) {
	var footer = document.getElementById('colourLinks');
	var footerLinks = footer.getElementsByTagName('a');
	
	for (var i = 0; i < footerLinks.length; i++) {
		footerLinks[i].onclick = function () {
			changeStyleSheet(this.id);
		}
	}
	}
}

function changeStyleSheet(link) {
	setActiveStyleSheet(link); 
	return false;
}

function findThemeLinks() {
	
	if(document.getElementById('themeLinks')) {
	var footer = document.getElementById('themeLinks');
	var themeLinks = footer.getElementsByTagName('a');
	
	for (var i = 0; i < themeLinks.length; i++) {
		themeLinks[i].onclick = function () {
			changeTheme(this.id);
		}
	}
	}
}

function changeTheme(link) {
	setActiveTheme(link); 
	return false;
}

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;
		  setOtherObjects(title);
	  }
    }
  }
}

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 setActiveTheme(theme) {
	var q = theme;
	q = q.replace('Black','');
	q = q.replace('White','');
	q = q.replace('Green','');

	if(document.getElementById('contentBox')){
		
		document.getElementById('contentBox').style.backgroundImage = 'url(/images/' + q + getActiveStyleSheet() + '.jpg)';
	}
	return null;
}

function getActiveTheme() {

	var w = document.getElementById('contentBox');
	var q;
	if(w.currentStyle) {

		q = w.currentStyle.backgroundImage;

	} 
	else {

		q = getComputedStyle(w,'').getPropertyValue('background-image'); 

	}
	q = q.replace('("','(');
	q = q.replace('")',')');
	q = q.replace('url(http://urban-juice.co.uk/images/','');
	q = q.replace('url(http://www.urban-juice.co.uk/images/','');
	q = q.replace('.jpg)','');

	return q;
}

function setOtherObjects(title) {

	if(document.getElementById('logoImg')){
		document.getElementById('logoImg').src = '/images/logo' + title + '.png';
	}
	if(document.getElementById('cdaImg')){
		document.getElementById('cdaImg').src = '/images/creativeDesignAgency' + title + '.png';
	}
	if(document.getElementById('navigateImg')){
		document.getElementById('navigateImg').src = '/images/navigate' + title + '.png';
	}
	if(document.getElementById('servicesNav')){
		document.getElementById('servicesNav').src = '/images/servicesOver' + title + '.png';
	}
	if(document.getElementById('clientListNav')){
		document.getElementById('clientListNav').src = '/images/clientListOver' + title + '.png';
	}
	if(document.getElementById('newsNav')){
		document.getElementById('newsNav').src = '/images/newsOver' + title + '.png';
	}
	if(document.getElementById('portfolioNav')){
		document.getElementById('portfolioNav').src = '/images/portfolioOver' + title + '.png';
	}
	if(document.getElementById('contactsNav')){
		document.getElementById('contactsNav').src = '/images/contactsOver' + title + '.png';
	}
	if(document.getElementById('biogsNav')){
		document.getElementById('biogsNav').src = '/images/biogsOver' + title + '.png';
	}
	if(document.getElementById('wwd')){
		document.getElementById('wwd').src = '/images/whatWeDo' + title + '.png';
	}
	if(document.getElementById('jaf')){
		document.getElementById('jaf').src = '/images/justAFew' + title + '.png';
	}
	if(document.getElementById('so')){
		document.getElementById('so').src = '/images/showingOff' + title + '.png';
	}
	if(document.getElementById('cu')){
		document.getElementById('cu').src = '/images/cu' + title + '.png';
	}
	if(document.getElementById('jalt')){
		document.getElementById('jalt').src = '/images/jalt' + title + '.png';
	}

	if(document.getElementById('ww')){
		document.getElementById('ww').src = '/images/ww' + title + '.png';
	}
	
	if(document.getElementById('person')){
		document.getElementById('person').src = document.getElementById('person').src.replace('Black',title);//'/images/ww' + title + '.png';
		document.getElementById('person').src = document.getElementById('person').src.replace('White',title);
		document.getElementById('person').src = document.getElementById('person').src.replace('Green',title);
	}

	var q;
	q = getActiveTheme();
	q = q.replace('Black','');
	q = q.replace('White','');
	q = q.replace('Green','');
	setActiveTheme(q);
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title;
  if(!cookie) {
   title = getPreferredStyleSheet();
  }
  else {
   title = cookie;
  }
  setActiveStyleSheet(title);

  var themeCookie = readCookie("theme");
  var theme;
  if(!themeCookie) {
   theme = getActiveTheme();
  }
  else {
   theme = themeCookie;
  }
  setActiveTheme(theme);
  
  findFooterLinks();
  findThemeLinks();
  navMouseOvers('navigation');
  navMouseOvers('themeLinks');
}

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