var NUMBER_OF_STARS = 10;
var IMAGES_PATH = "/images/stars/";

function init_rating()
{
    var ratings = document.getElementsByTagName('div');
    for (var i = 0; i < ratings.length; i++)
    {
        if (ratings[i].className != 'rating')
            continue;
            
        var rating = ratings[i].firstChild.nodeValue;
        ratings[i].removeChild(ratings[i].firstChild);
        if (rating > NUMBER_OF_STARS || rating < 0)
            continue;
        for (var j = 0; j < NUMBER_OF_STARS; j++)
        {
            var star = document.createElement('img');
            if (rating >= 1)
            {
                star.setAttribute('src', IMAGES_PATH+'rating_on.gif');
                star.className = 'on';
                rating--;
            }
            else if(rating == 0.5)
            {
                star.setAttribute('src', IMAGES_PATH+'rating_half.gif');
                star.className = 'half';
                rating = 0;
            }
            else
            {
                star.setAttribute('src', IMAGES_PATH+'rating_off.gif');
                star.className = 'off';
            }
            
			//var widgetId = ratings[i].getAttribute('id').substr(5);
			var widgetId = ratings[i].getAttribute('id').substr(7);
			
            star.setAttribute('id', 'star_'+widgetId+'_'+j);
            star.onmouseover = new Function("evt", "displayHover("+widgetId+", "+j+");");
            star.onmouseout = new Function("evt", "displayNormal("+widgetId+", "+j+");");
            ratings[i].appendChild(star);
        } 
    }
}

function update_rating(element,rating)
{
    var elem = document.getElementById(element);
	// Remove all existing content from this element
	//jQuery('#'+elem).html('');
	
	//alert(elem);
	//alert(rating);
	
	rating++;
	
	elem.innerHTML='';
	
	for (var j = 0; j < NUMBER_OF_STARS; j++)
	{
		var star = document.createElement('img');
		if (rating >= 1)
		{
			star.setAttribute('src', IMAGES_PATH+'rating_on.gif');
			star.className = 'on';
			rating--;
		}
		else if(rating == 0.5)
		{
			star.setAttribute('src', IMAGES_PATH+'rating_half.gif');
			star.className = 'half';
			rating = 0;
		}
		else
		{
			star.setAttribute('src', IMAGES_PATH+'rating_off.gif');
			star.className = 'off';
		}
		//var widgetId = ratings[i].getAttribute('id').substr(7);
		//star.setAttribute('id', 'star_'+widgetId+'_'+j);
		//star.onmouseover = new Function("evt", "displayHover("+widgetId+", "+j+");");
		//star.onmouseout = new Function("evt", "displayNormal("+widgetId+", "+j+");");
		elem.appendChild(star);
	} 
}

function displayHover(ratingId, star)
{
    for (var i = 0; i <= star; i++)
    {
        document.getElementById('star_'+ratingId+'_'+i).setAttribute('src', IMAGES_PATH+'rating_over.gif');
    }
}

function displayNormal(ratingId, star)
{
    for (var i = 0; i <= star; i++)
    {
        var status = document.getElementById('star_'+ratingId+'_'+i).className;
        document.getElementById('star_'+ratingId+'_'+i).setAttribute('src', IMAGES_PATH+'rating_'+status+'.gif');
    }
}