// All part of the Dynamic Star Rating by Jordan Boesch!

function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

// PRE-LOAD IMAGES -----------------------------

if (document.images){
  pic1 = new Image(220,19); 
  pic1.src = "images/rating_loading.gif"; 
  

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

  pic3 = new Image(25,75); 
  pic3.src = "images/rating_star_2.gif"; 
  
  pic4 = new Image(16,13); 
  pic4.src = "images/rating_tick.gif";
  
  pic5 = new Image(14,14); 
  pic5.src = "images/rating_warning.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,root){

	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;
			res = trim(res, '');
			 //alert(res);
			if(res == 'already_voted'){
				loader.style.display = 'block';
				loader.innerHTML = '<div class="voted_twice">You already voted!</div>';
				
			} 
			else if(res=='login')
			{
				//alert('In order to rating you need first login');
				loader.style.display = 'block';
				loader.innerHTML = '<div class="voted_twice">You must be logged in to rate videos.</div>';
				}
			else if(res=='Can_not_vote'){
					loader.style.display = 'block';
					loader.innerHTML = '<div class="voted">You can not rate the video uploaded by you</div>';
				}
			else {
				
				//loader.style.display = 'block';
				document.getElementById('VotedMsg').innerHTML = '<div class="voted" style="float:right;">Thanks for rating!</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-rating3';
				
				var all_li = ulRater.getElementsByTagName('li');
				
                 
				if(navigator.appName == 'Microsoft Internet Explorer'){
					document.getElementById('ul_'+id).style.setAttribute('width',res);
				 } else {
					document.getElementById('ul_'+id).style.width=res;
				 }
				
				for(var i=1;i<all_li.length;i++){
					//all_li[0].setAttribute('style','width: '+res);
					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 {
			document.getElementById('VotedMsg').innerHTML = '<img src="'+root+'images/rating_loading.gif" alt="loading" width="160" />';	
		}
	
	}
	var url = root+"include/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);
	 

}