function createCookie( name, value, days ) {
  var expires;
  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 cookies = document.cookie.split(';');
  for( var i=0; i < cookies.length; i++ ) {
    var c = cookies[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;
}


ActiveStyle = Class.create();

ActiveStyle.prototype = {

   _styles: [],
	 
   initialize: function() {
      var i, el;
      var els = document.getElementsByTagName("link");
      for( var i = 0; i < els.length ; i++ ) {
         el = els[i];
         if( el.getAttribute("rel").indexOf("style") != -1 &&
             el.getAttribute("title") )
         {
            this._styles.push( el );
         }
      }

      var style = readCookie( "style" );
      style = this._styles[0].getAttribute("title"); 
      this.enable( style );
   },

   enable: function( act_style ) {
      this._styles.each( function( s ) {
         s.disabled = true;
         if( s.getAttribute("title") == act_style ) {
            s.disabled = false;
         }
      });
      this._current = act_style;
      // $("menu_style").innnerHTML = this.genHTML();
   },
   
   current: function() {
      return this._current;
   },

   genHTML: function() {
      var html = "";
      html += 
         '-' +
         '<span class="menutext"> style: </span>' +
         '<a class="menu" href="" title="Change Style 1" onclick="activeStyle.enable(\'style1\');return false;">1</a>' +
         '</span>' +
         '<span class="menutext"> | </span>' +
         '<a class="menu" href="" title="Change Style 2" onclick="activeStyle.enable(\'style2\'); return false;">2</a>';
      return html;
   }
}


/*
window.onunload = function( e ) {
  var title = activeStyle.current();
  createCookie( "style", title, 365 );
}
*/

var as = new ActiveStyle();