var style_cookie_name = "style" ;
	var style_cookie_duration = 30 ;
	
	// *** END OF CUSTOMISABLE SECTION ***
	
	function switch_style ( css_title )
	{
	// You may use this script on your site free of charge provided
	// you do not remote this notice or the URL below. Script from
	// http://www.thesitewizard.com/javascripts/change-style-sheets.shtml
	  var i, link_tag ;
	  for (i = 0, link_tag = document.getElementsByTagName("link") ;
		i < link_tag.length ; i++ ) {
		if ((link_tag[i].rel.indexOf( "stylesheet" ) != -1) &&
		  link_tag[i].title) {
		  link_tag[i].disabled = true ;
		  if (link_tag[i].title == css_title) {
			link_tag[i].disabled = false ;
		  }
		}
		set_cookie( style_cookie_name, css_title,
		  style_cookie_duration );
	  }
	}
	function set_style_from_cookie()
	{
	  var css_title = get_cookie( style_cookie_name );
	  if (css_title.length) {
		switch_style( css_title );
	  }
	}
	function set_cookie ( cookie_name, cookie_value,
		lifespan_in_days, valid_domain )
	{
		// http://www.thesitewizard.com/javascripts/cookies.shtml
		var domain_string = valid_domain ?
						   ("; domain=" + valid_domain) : '' ;
		document.cookie = cookie_name +
						   "=" + encodeURIComponent( cookie_value ) +
						   "; max-age=" + 60 * 60 *
						   24 * lifespan_in_days +
						   "; path=/" + domain_string ;
	}
	function get_cookie ( cookie_name )
	{
		// http://www.thesitewizard.com/javascripts/cookies.shtml
		var cookie_string = document.cookie ;
		if (cookie_string.length != 0) {
			var cookie_value = cookie_string.match (
							'(^|;)[\s]*' +
							cookie_name +
							'=([^;]*)' );
			return decodeURIComponent ( cookie_value[2] ) ;
		}
		return '' ;
	}