// All part of the Dynamic Star Rating by Jordan Boesch!
// http://creativecommons.org/licenses/by-nc-nd/2.5/ca/
// PRE-LOAD IMAGES

if (document.images)
{
  pic1 = new Image(220,19); 
  pic1.src = "../images/loading.gif"; 
  pic2 = new Image(25,75); 
  pic2.src = "../images/ratingpatch.gif"; 
  pic3 = new Image(25,75); 
  pic3.src = "../images/ratingpatch2.gif"; 
  pic4 = new Image(16,13); 
  pic4.src = "../images/ratingtick.gif";
  pic5 = new Image(14,14); 
  pic5.src = "../images/ratingwarn.gif";
}

// AJAX

var xmlHttp

function GetXmlHttpObject()
{
  var xmlHttp = null;

  try
  {
	  // Firefox, Opera 8.0+, Safari
	  xmlHttp = new XMLHttpRequest();
  }
  catch (e)
  {
	  // Internet Explorer
    try
    {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
    catch (e)
    {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
  }
	return xmlHttp;
}

// Calculate the rating
function rate(rating,id,show5,showPerc,showVotes)
{
	xmlHttp = GetXmlHttpObject()

  if (xmlHttp == null)
  {
    //alert ("Your browser does not support AJAX!");
		return;
  }

  xmlHttp.onreadystatechange = function()
  {
    var loader = document.getElementById('loading_'+id);
    var uldiv = document.getElementById('ul_'+id);
	
    if (xmlHttp.readyState == 4)
    { 
			//loader.style.display = 'none';
			var res = xmlHttp.responseText;
			
      //alert(res);
			
      if (res == 'already_voted')
      {
				loader.style.display = 'block';
				loader.innerHTML = '<div class="voted_twice">You already voted!</div>';
      }
      else
      {
				loader.style.display = 'block';
        loader.innerHTML = '<div class="voted">Vote counted!</div>';

        if (show5 == true)
        {
					var out = document.getElementById('outOfFive_'+id);
					var calculate = res/20;
					out.innerHTML = Math.round(calculate*100)/100; // 3.47;
					//out.innerHTML = Math.round((calculate*2),0)/2; // 3.5;
				} 
				
        if (showPerc == true)
        {
					var perc = document.getElementById('percentage_'+id);
					//var newPerc = Math.round(Math.ceil(res/5))*5;
					var newPerc = res;
					perc.innerHTML = newPerc+'%';
				}
        else if (showPerc == false)
        {
					var newPerc = res;
				}
				
        if (showVotes == true)
        {
					var votediv = document.getElementById('showvotes_'+id).firstChild.nodeValue;
					var splitted = votediv.split(' ');
					var newval = parseInt(splitted[0]) + 1;
          if(newval == 1)
          {
						document.getElementById('showvotes_'+id).innerHTML = newval+' Vote';
          }
          else
          {
						document.getElementById('showvotes_'+id).innerHTML = newval+' Votes';
					}
				}
				
				var ulRater = document.getElementById('rater_'+id);
				ulRater.className = 'star-rating2';
				
				var all_li = ulRater.getElementsByTagName('li');
				
				// start at 1 because the first li isn't a star
        for (var i=1;i<all_li.length;i++)
        {
					all_li[i].getElementsByTagName('a')[0].onclick = 'return false;';
					all_li[i].getElementsByTagName('a')[0].setAttribute('href','#');
				}
				
        if(navigator.appName == 'Microsoft Internet Explorer')
        {
					uldiv.style.setAttribute('width',newPerc+'%'); // IE
        }
        else
        {
					uldiv.setAttribute('style','width:'+newPerc+'%'); // Everyone else
        }
				
			}
    }
    else
    {
      loader.innerHTML = '<img src="../images/loading.gif" alt="loading" />';  
		}
	
	}
  var url = "rating.php";
	var params = "id="+id+"&rating="+rating;
	xmlHttp.open("POST",url,true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", params.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(params);
}