// Paul Sowden's javascript switcher as detailed at www.alistapart.com/articles/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 getSiteType()
{
  	var q, p, siteName;
	var CMSname = 'WarpCrystal';

	siteName = 'website';

  	for( q=0; (p = document.getElementsByTagName("meta")[q]); q++ )
	{
	   	if ( p.getAttribute("content").indexOf(CMSname) != -1 )
			siteName = 'cms';
	}
	return siteName;
}

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;
}

window.onload = function(e)
{
	var site = getSiteType();
	var cookie = readCookie(site + "Style");
	var title = cookie ? cookie : getPreferredStyleSheet();

	setActiveStyleSheet(title);
}

window.onunload = function(e) {
	var site = getSiteType();
	var title = getActiveStyleSheet();

	createCookie(site + "Style", title, 30);
}

var site = getSiteType();
var cookie = readCookie(site + "Style");
var title = cookie ? cookie : getPreferredStyleSheet();

//	alert('here is ' + title + ' and ' + site + ' ' + cookie + '.');
setActiveStyleSheet(title);