var $j=jQuery.noConflict();

function setActiveStyleSheet(id) 
{
	var i, a, main, aan_te_zetten;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
	{
	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("id")) 
	{
	  a.disabled = true;
	  if(a.getAttribute("id") == id) 
	  {
		aan_te_zetten = a;
	  }
	}
	}
	a=aan_te_zetten;
	a.disabled = false;
	/* templatefoto aanpassen */
	switch (id)
	{
		case 'altstyle_1': /* naar verbreed */
			 $j('#header .a_0').hide();
			 $j('#header .a_1').show();
			 $j('.template_img_smal').hide();
			 $j('.template_img_breed').show();
			break;
		case 'altstyle_2':  /* naar versmald */
			$j('#header .a_1').hide();
			$j('#header .a_0').show();
			$j('.template_img_breed').hide();
			$j('.template_img_smal').show();
			break;
	}
}

function getActiveStyleSheet() 
{
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) 
  {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("id") && !a.disabled) return a.getAttribute("id");
  }
  return null;
}

function getPreferredStyleSheet() {
	var id='';
	$j('link').each(function(){
		rel = $j(this).attr('rel');
		if (rel.indexOf("style") != -1)
		{
			if (rel.indexOf("alt") == -1)
			{
				if ($j(this).attr('id') != '')
				{
					id = $j(this).attr('id');
				}
			}
		}
	});
	return id;
}

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;
}

$j(document).ready(function() {
  var cookie = readCookie("style");
  var id = (cookie != 'null') ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(id);
});

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