// $Id: rating_update.js 235 2009-08-25 12:39:17Z fwhite $
// 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 = imageurl+"/rating_loading.gif"; 

  pic2 = new Image(25,75); 
  pic2.src =  imageurl+"/rating_star.gif"; 

  pic3 = new Image(25,75); 
  pic3.src =  imageurl+"/rating_star_2.gif"; 

  pic4 = new Image(16,13); 
  pic4.src =  imageurl+"/rating_tick.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">Έχετε ήδη ψηφίσει!</div>';

				

			} else {

			

				loader.style.display = 'block';
				loader.innerHTML = '<div class="voted">Σας ευχαριστούμε για την ψήφο σας!</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');

				

				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="'+imageurl+'/rating_loading.gif" alt="loading" />';	

		}

	

	}

	var url = baseurl+"/rating_process.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);



}