// Initialize cookie resizing
//
// selector - jQuery selector identifying resizing links. class name from each
//            link will be used as the size
// defaultSize - what it says on the tin. will be applied to body when cookie
//               is not present
function cookieResize(selector, defaultSize) {
    
    var lastSize = defaultSize;
    
    function write(name, value, days) {
        var expires = "";
      if (days) {
          var date = new Date();
          date.setTime(date.getTime() + (days * 86400000));
          var expires = "; expires=" + date.toGMTString();
       }
       document.cookie = name + "=" + value + expires + "; path=/";
    }
 
    function read(name) {
       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(name) == 0) return c.substring(name.length, c.length);
       }
       return null;
    }
 
    function updateSizeFromCookie() {
        $('body').removeClass(lastSize);
        lastSize = read('size') || defaultSize;
        $('body').addClass(lastSize);
    }
    
    jQuery(selector).click(function() {
        write('size', this.className);
        updateSizeFromCookie();
        return false;
    });
 
    updateSizeFromCookie();
    
}