jQuery.fn.rated = function(curvalue) {
    var container = jQuery(this);

    var sn = Math.floor(curvalue);
    var hs = curvalue - sn;

    for(var i=1; i <= sn; i++) {
         var $div = $('<div class="rated-star norate"></div>').appendTo(container);
    }
    if(hs>0) var $div = $('<div class="rated-star rated-star-left norate"></div>').appendTo(container);
}

jQuery.fn.rating = function(url, options) {
	
	if(url == null) return;
	
	var settings = {
            url : url, // post changes to 
            increment : 1,   // value to increment by
            maxvalue  : 5,   // max number of stars
            curvalue  : 0,   // number of selected stars
            mid       : '',
            key       : ''
        };
	
        if(options) {
            jQuery.extend(settings, options);
        };
        
        jQuery.extend(settings, {cancel: (settings.maxvalue > 1) ? true : false});
   
        var container = jQuery(this);
	
	jQuery.extend(container, {averageRating: settings.curvalue, url: settings.url});
        settings.increment = (settings.increment < .75) ? .5 : 1;
        
        var s = 0;
        
	for(var i= 0; i <= settings.maxvalue ; i++){
            if (i == 0) {
	        if(settings.cancel == true){
                     var div = '<div class="cancel"><a href="#0" title="Cancel Rating">Cancel Rating</a></div>';
                     container.empty().append(div);
                }
            } else {
                var $div = $('<div class="star"></div>')
                           .append('<a href="#'+i+'" title="Give it '+i+'/'+settings.maxvalue+'">'+i+'</a>')
                           .appendTo(container);
                if (settings.increment == .5) {
                     if (s%2) {
                        $div.addClass('star-left');
                     } else {
                        $div.addClass('star-right');
                     }
                }
            }
        
            i=i-1+settings.increment;
            s++;
        }
	
        var stars = jQuery(container).children('.star');
        var cancel = jQuery(container).children('.cancel');
	
        stars.mouseover(function(){
            event.drain();
            event.fill(this);
        })
        .mouseout(function(){
            event.drain();
            event.reset();
        })
        .focus(function(){
            event.drain();
            event.fill(this);
        })
        .blur(function(){
            event.drain();
            event.reset();
        });

        stars.click(function(){
           if(settings.cancel == true){
               settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;
               stars.switchClass('hover','on');
               jQuery.post(container.url, {"mid": settings.mid, "key": settings.key, "rating": jQuery(this).children('a')[0].href.split('#')[1]}, function(txt){});
	       return false;
           } else if (settings.maxvalue == 1) {
	       settings.curvalue = (settings.curvalue == 0) ? 1 : 0;
	       stars.switchClass('hover','on');
	       $(this).toggleClass('on');
	       jQuery.post(container.url, {"mid": settings.mid, "key": settings.key, "rating": jQuery(this).children('a')[0].href.split('#')[1]}, function(txt){});
	       return false;
	   }
	   return true;
			
        });

        // cancel button events
        if(cancel){
           cancel.mouseover(function(){
                  event.drain();
                  jQuery(this).addClass('on');
              })
	     .mouseout(function(){
	          event.reset();
	          jQuery(this).removeClass('on');
	      })
	     .focus(function(){
	          event.drain();
	          jQuery(this).addClass('on');
	      })
	     .blur(function(){
	          event.reset();
	          jQuery(this).removeClass('on');
	      });
      
           // click events.
           cancel.click(function(){
                  event.drain();
                  settings.curvalue = 0;
                  jQuery.post(container.url, {"mid": settings.mid, "key": settings.key, "rating": jQuery(this).children('a')[0].href.split('#')[1]}, function(txt){});
                  return false;
           });
     }
        
     var event = {
		fill: function(el){ // fill to the current mouse position.
			var index = stars.index(el) + 1;
			stars.children('a').css('width', '100%').end()
			     .slice(0,index).addClass('hover').end();
		},
		drain: function() { // drain all the stars.
			stars.filter('.on').removeClass('on').end()
			     .filter('.hover').removeClass('hover').end();
		},
		reset: function(){ // Reset the stars to the default index.
			stars.slice(0,settings.curvalue / settings.increment).addClass('on').end();
		}
     };   
  
     event.reset();
	
     return(this);	
};

jQuery.fn.switchClass = function(from, to) {

   return this.each(function(from, to){
      if(jQuery(this).hasClass('hover')) jQuery(this).removeClass('hover').addClass('on');
   });

}