if(!SAPO.Widget||typeof(SAPO.Widget)=='undefined'){SAPO.namespace('Widget');}
SAPO.Widget.Rating=function(element,elmMessages,hash,options,defaultRating){this.init(element,elmMessages,hash,options,defaultRating);};SAPO.Widget.Rating.prototype={init:function(element,elmMessages,hash)
{var options=Object.extend({total:5,image:false,imageOver:false,imageHalf:false,url:false,logged:false,messages:[],method:'post',variable:'rate',hashVariable:'hash'},arguments[3]||{});try{this.element=document.getElementById(element);if(typeof(elmMessages)!='undefined'&&elmMessages!=false){this.elmMessages=document.getElementById(elmMessages);}
if(typeof(arguments[4])=='undefined'){this.defaultRating=0;}else{this.defaultRating=Number(arguments[4]);}
this.defaultImageSrc=[];this.hash=hash;this.options=options;if(!this.options.image||!this.options.url){alert('Options "image" and "url" are required.');return;}
if((typeof(Ajax)=='undefined')&&(typeof(YAHOO.util.Connection)=='undefined')){alert('Ajax.Request or YAHOO.util.Connection are required');return;}
if(typeof(Event)=='undefined'&&typeof(YAHOO.util.Event)=='undefined'){alert('Prototype Event or YAHOO.util.Event are required');return;}
if(this.options.messages.length==this.options.total){this.hasMessages=true;}else{this.hasMessages=false;}
if(!this.options.imageOver){this.options.imageOver=this.options.image;}
if(!this.options.imageHalf){this.options.imageHalf=this.options.imageOver;}
this.active=false;this.sto=false;this.writeImages();}catch(e){}},writeImages:function()
{var aImgs=this.element.getElementsByTagName('IMG');for(var i=(aImgs.length-1);i>=0;i--){aImgs[i].parentNode.removeChild(aImgs[i]);}
var media=this.calculateMedia(this.defaultRating);for(var i=0;i<this.options.total;i++){this.element.appendChild(this.genImageElement(i,media));}},genImageElement:function(ident,media)
{var img=document.createElement('IMG');if(media>ident&&media<(ident+1)){img.src=this.options.imageHalf;}else if(media>ident){img.src=this.options.imageOver;}else if(media<=ident){img.src=this.options.image;}
img.border='0';img.alt='';img.setAttribute('ident',ident);if(this.options.logged){this.addOnMouseOver(img);this.addOnMouseOut(img);this.addOnClick(img);}
return img;},genSimpleImageElement:function(ident,media)
{var img=document.createElement('IMG');if(media>ident&&media<(ident+1)){img.src=this.options.imageHalf;}else if(media>ident){img.src=this.options.imageOver;}else if(media<=ident){img.src=this.options.image;}
img.border='0';img.alt='';return img;},addOnMouseOver:function(elm)
{if(this.options.imageOver){Event.observe(elm,'mouseover',this.onMouseOver.bindAsEventListener(this));}},onMouseOver:function(e)
{this.active=true;if(this.sto){clearTimeout(this.sto);this.sto=false;}
var elm=Event.findElement(e,'IMG');var ident=elm.getAttribute('ident');this.showMessage(ident);var aImgs=this.element.getElementsByTagName('IMG');for(var i=0;i<aImgs.length;i++){if(i>ident){aImgs[i].src=this.options.image;}else{aImgs[i].src=this.options.imageOver;}}},addOnMouseOut:function(elm)
{if(this.options.imageOver){Event.observe(elm,'mouseout',this.onMouseOut.bindAsEventListener(this));}},onMouseOut:function(e)
{this.active=false;var elm=Event.findElement(e,'IMG');var ident=elm.getAttribute('ident');this.showMessage();var aImgs=this.element.getElementsByTagName('IMG');for(var i=0;i<aImgs.length;i++){aImgs[i].src=this.options.image;}
this.sto=setTimeout(function(){if(!this.active){this.writeImages();}}.bind(this),1000);},addOnClick:function(elm)
{Event.observe(elm,'click',this.onClick.bindAsEventListener(this));},onClick:function(e)
{var elm=Event.findElement(e,'IMG');var ident=elm.getAttribute('ident');if(this.options.method=='post'){new Ajax.Request(this.options.url,{method:'post',postBody:this.options.variable+'='+ident+'&'+this.options.hashVariable+'='+this.hash,onSuccess:this.onClickSuccess.bind(this)});}else if(this.options.method=='get'){new Ajax.Request(this.options.url,{method:'get',parameters:this.options.variable+'='+ident+'&'+this.options.hashVariable+'='+this.hash,onSuccess:this.onClickSuccess.bind(this)});}},onClickSuccess:function(req)
{if(req!=null){var res=eval('['+req.responseText+']')[0];var ratingPercent=res.rating;if(typeof(res.message)!='undefined'&&res.message!=null){this.elmMessages.innerHTML=res.message;}}else{var ratingPercent=0;}
this.setDefault(ratingPercent);},showMessage:function(id)
{if(this.hasMessages){if(id&&typeof(id)!='undefined'){this.elmMessages.innerHTML=this.options.messages[id];}else{this.elmMessages.innerHTML='';}}},setDefault:function(ratingPercent)
{var aImgs=this.element.getElementsByTagName('IMG');for(var i=(aImgs.length-1);i>=0;i--){aImgs[i].parentNode.removeChild(aImgs[i]);}
var media=this.calculateMedia(ratingPercent);for(var j=0;j<this.options.total;j++){this.element.appendChild(this.genSimpleImageElement(j,media));}},calculateMedia:function(ratingPercent)
{ratingPercent=ratingPercent/100;var media=this.options.total*ratingPercent;var intMedia=Math.round(media);var decimal=media-intMedia;var valor=0;if((decimal>=0&&decimal<=0.25)||(decimal>=-0.25&&decimal<=0)){valor=intMedia;}else if((decimal>0.25&&decimal<0.75)||(decimal>-0.75&&decimal<-0.25)){if(decimal<0){valor=intMedia-0.5;}else{valor=intMedia+0.5;}}
return valor;},debug:function(txt)
{}};