/**
* Styleswitch stylesheet switcher built on jQuery
* Under an Attribution, Share Alike License
* By Kelvin Luck ( http://www.kelvinluck.com/ )
**/

$(document).ready(function() {
	$('.styleswitch').click(function()
	{
		switchStylestyle(this.getAttribute("rel"));
		return false;
	});
  $('.styletoggler').click(function()
	{
    
		toggleStylestyle(this.getAttribute("rel"));    
		return false;
	});
  
  //IE-hack, must initiate the stylesheets.
  $('link[@rel*=style][@title]').each(function(i) 
	{        
    this.disabled = true;   
	});
  
	var c = readCookie('style');
	if (c) switchStylestyle(c); 
  
  
  c = readCookie('activeToggledStyle');  
	if (c) {    
    setActiveStyle(c);
  }  
  
});


function switchStylestyle(styleName)
{    
	$('link[@rel*=style][@title]').each(function(i) 
	{
    
    if(this.getAttribute('title') != 'contrast'){
      this.disabled = true;		
      if (this.getAttribute('title') == styleName) this.disabled = false;
    }
	});
  createCookie('style', styleName, 365); 
}
function setActiveStyle(styleName)
{    
	$('link[@rel*=style][@title]').each(function(i) 
	{	    
		if (this.getAttribute('title') == styleName){      
      this.disabled = false;
      $('#contrast').html('Normale farger')
    }
	});	
}


function toggleStylestyle(styleName)
{  
  $('link[@rel*=style][@title]').each(function(i) 
	{		
    
		if (this.getAttribute('title') == styleName){      
      if(!this.disabled){
        this.disabled = false;  
        eraseCookie('activeToggledStyle')
        this.disabled = true;                
        $('#contrast').html('Høy kontrast')
      }      
      else{
        this.disabled = false;       
        $('#contrast').html('Normale farger');
        createCookie('activeToggledStyle', styleName, 365);        
      } 
    }
	});	 
}


// cookie functions http://www.quirksmode.org/js/cookies.html
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 var 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 eraseCookie(name)
{
	createCookie(name,"",-1);
}
// /cookie functions