//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2009 Aaron Newton <http://clientcide.com/>, Valerio Proietti <http://mad4milk.net> & the MooTools team <http://mootools.net/developers>, MIT Style License.

MooTools.More={version:"1.2.4.2",build:"bd5a93c0913cce25917c48cbdacde568e15e02ef"};Fx.Elements=new Class({Extends:Fx.CSS,initialize:function(b,a){this.elements=this.subject=$$(b);
this.parent(a);},compute:function(g,h,j){var c={};for(var d in g){var a=g[d],e=h[d],f=c[d]={};for(var b in a){f[b]=this.parent(a[b],e[b],j);}}return c;
},set:function(b){for(var c in b){var a=b[c];for(var d in a){this.render(this.elements[c],d,a[d],this.options.unit);}}return this;},start:function(c){if(!this.check(c)){return this;
}var h={},j={};for(var d in c){var f=c[d],a=h[d]={},g=j[d]={};for(var b in f){var e=this.prepare(this.elements[d],b,f[b]);a[b]=e.from;g[b]=e.to;}}return this.parent(h,j);
}});var Accordion=Fx.Accordion=new Class({Extends:Fx.Elements,options:{display:0,show:false,height:true,width:false,opacity:true,alwaysHide:false,trigger:"click",initialDisplayFx:true,returnHeightToAuto:true},initialize:function(){var c=Array.link(arguments,{container:Element.type,options:Object.type,togglers:$defined,elements:$defined});
this.parent(c.elements,c.options);this.togglers=$$(c.togglers);this.container=document.id(c.container);this.previous=-1;this.internalChain=new Chain();
if(this.options.alwaysHide){this.options.wait=true;}if($chk(this.options.show)){this.options.display=false;this.previous=this.options.show;}if(this.options.start){this.options.display=false;
this.options.show=false;}this.effects={};if(this.options.opacity){this.effects.opacity="fullOpacity";}if(this.options.width){this.effects.width=this.options.fixedWidth?"fullWidth":"offsetWidth";
}if(this.options.height){this.effects.height=this.options.fixedHeight?"fullHeight":"scrollHeight";}for(var b=0,a=this.togglers.length;b<a;b++){this.addSection(this.togglers[b],this.elements[b]);
}this.elements.each(function(e,d){if(this.options.show===d){this.fireEvent("active",[this.togglers[d],e]);}else{for(var f in this.effects){e.setStyle(f,0);
}}},this);if($chk(this.options.display)){this.display(this.options.display,this.options.initialDisplayFx);}this.addEvent("complete",this.internalChain.callChain.bind(this.internalChain));
},addSection:function(e,c){e=document.id(e);c=document.id(c);var f=this.togglers.contains(e);this.togglers.include(e);this.elements.include(c);var a=this.togglers.indexOf(e);
var b=this.display.bind(this,a);e.store("accordion:display",b);e.addEvent(this.options.trigger,b);if(this.options.height){c.setStyles({"padding-top":0,"border-top":"none","padding-bottom":0,"border-bottom":"none"});
}if(this.options.width){c.setStyles({"padding-left":0,"border-left":"none","padding-right":0,"border-right":"none"});}c.fullOpacity=1;if(this.options.fixedWidth){c.fullWidth=this.options.fixedWidth;
}if(this.options.fixedHeight){c.fullHeight=this.options.fixedHeight;}c.setStyle("overflow","hidden");if(!f){for(var d in this.effects){c.setStyle(d,0);
}}return this;},detach:function(){this.togglers.each(function(a){a.removeEvent(this.options.trigger,a.retrieve("accordion:display"));},this);},display:function(a,b){if(!this.check(a,b)){return this;
}b=$pick(b,true);if(this.options.returnHeightToAuto){var d=this.elements[this.previous];if(d&&!this.selfHidden){for(var c in this.effects){d.setStyle(c,d[this.effects[c]]);
}}}a=($type(a)=="element")?this.elements.indexOf(a):a;if((this.timer&&this.options.wait)||(a===this.previous&&!this.options.alwaysHide)){return this;}this.previous=a;
var e={};this.elements.each(function(h,g){e[g]={};var f;if(g!=a){f=true;}else{if(this.options.alwaysHide&&((h.offsetHeight>0&&this.options.height)||h.offsetWidth>0&&this.options.width)){f=true;
this.selfHidden=true;}}this.fireEvent(f?"background":"active",[this.togglers[g],h]);for(var j in this.effects){e[g][j]=f?0:h[this.effects[j]];}},this);
this.internalChain.chain(function(){if(this.options.returnHeightToAuto&&!this.selfHidden){var f=this.elements[a];if(f){f.setStyle("height","auto");}}}.bind(this));
return b?this.start(e):this.set(e);}});Fx.Scroll=new Class({Extends:Fx,options:{offset:{x:0,y:0},wheelStops:true},initialize:function(b,a){this.element=this.subject=document.id(b);
this.parent(a);var d=this.cancel.bind(this,false);if($type(this.element)!="element"){this.element=document.id(this.element.getDocument().body);}var c=this.element;
if(this.options.wheelStops){this.addEvent("start",function(){c.addEvent("mousewheel",d);},true);this.addEvent("complete",function(){c.removeEvent("mousewheel",d);
},true);}},set:function(){var a=Array.flatten(arguments);if(Browser.Engine.gecko){a=[Math.round(a[0]),Math.round(a[1])];}this.element.scrollTo(a[0],a[1]);
},compute:function(c,b,a){return[0,1].map(function(d){return Fx.compute(c[d],b[d],a);});},start:function(c,g){if(!this.check(c,g)){return this;}var e=this.element.getScrollSize(),b=this.element.getScroll(),d={x:c,y:g};
for(var f in d){var a=e[f];if($chk(d[f])){d[f]=($type(d[f])=="number")?d[f]:a;}else{d[f]=b[f];}d[f]+=this.options.offset[f];}return this.parent([b.x,b.y],[d.x,d.y]);
},toTop:function(){return this.start(false,0);},toLeft:function(){return this.start(0,false);},toRight:function(){return this.start("right",false);},toBottom:function(){return this.start(false,"bottom");
},toElement:function(b){var a=document.id(b).getPosition(this.element);return this.start(a.x,a.y);},scrollIntoView:function(c,e,d){e=e?$splat(e):["x","y"];
var h={};c=document.id(c);var f=c.getPosition(this.element);var i=c.getSize();var g=this.element.getScroll();var a=this.element.getSize();var b={x:f.x+i.x,y:f.y+i.y};
["x","y"].each(function(j){if(e.contains(j)){if(b[j]>g[j]+a[j]){h[j]=b[j]-a[j];}if(f[j]<g[j]){h[j]=f[j];}}if(h[j]==null){h[j]=g[j];}if(d&&d[j]){h[j]=h[j]+d[j];
}},this);if(h.x!=g.x||h.y!=g.y){this.start(h.x,h.y);}return this;},scrollToCenter:function(c,e,d){e=e?$splat(e):["x","y"];c=$(c);var h={},f=c.getPosition(this.element),i=c.getSize(),g=this.element.getScroll(),a=this.element.getSize(),b={x:f.x+i.x,y:f.y+i.y};
["x","y"].each(function(j){if(e.contains(j)){h[j]=f[j]-(a[j]-i[j])/2;}if(h[j]==null){h[j]=g[j];}if(d&&d[j]){h[j]=h[j]+d[j];}},this);if(h.x!=g.x||h.y!=g.y){this.start(h.x,h.y);
}return this;}});Fx.Slide=new Class({Extends:Fx,options:{mode:"vertical",hideOverflow:true},initialize:function(b,a){this.addEvent("complete",function(){this.open=(this.wrapper["offset"+this.layout.capitalize()]!=0);
if(this.open&&Browser.Engine.webkit419){this.element.dispose().inject(this.wrapper);}},true);this.element=this.subject=document.id(b);this.parent(a);var d=this.element.retrieve("wrapper");
var c=this.element.getStyles("margin","position","overflow");if(this.options.hideOverflow){c=$extend(c,{overflow:"hidden"});}this.wrapper=d||new Element("div",{styles:c}).wraps(this.element);
this.element.store("wrapper",this.wrapper).setStyle("margin",0);this.now=[];this.open=true;},vertical:function(){this.margin="margin-top";this.layout="height";
this.offset=this.element.offsetHeight;},horizontal:function(){this.margin="margin-left";this.layout="width";this.offset=this.element.offsetWidth;},set:function(a){this.element.setStyle(this.margin,a[0]);
this.wrapper.setStyle(this.layout,a[1]);return this;},compute:function(c,b,a){return[0,1].map(function(d){return Fx.compute(c[d],b[d],a);});},start:function(b,e){if(!this.check(b,e)){return this;
}this[e||this.options.mode]();var d=this.element.getStyle(this.margin).toInt();var c=this.wrapper.getStyle(this.layout).toInt();var a=[[d,c],[0,this.offset]];
var g=[[d,c],[-this.offset,0]];var f;switch(b){case"in":f=a;break;case"out":f=g;break;case"toggle":f=(c==0)?a:g;}return this.parent(f[0],f[1]);},slideIn:function(a){return this.start("in",a);
},slideOut:function(a){return this.start("out",a);},hide:function(a){this[a||this.options.mode]();this.open=false;return this.set([-this.offset,0]);},show:function(a){this[a||this.options.mode]();
this.open=true;return this.set([0,this.offset]);},toggle:function(a){return this.start("toggle",a);}});Element.Properties.slide={set:function(b){var a=this.retrieve("slide");
if(a){a.cancel();}return this.eliminate("slide").store("slide:options",$extend({link:"cancel"},b));},get:function(a){if(a||!this.retrieve("slide")){if(a||!this.retrieve("slide:options")){this.set("slide",a);
}this.store("slide",new Fx.Slide(this,this.retrieve("slide:options")));}return this.retrieve("slide");}};Element.implement({slide:function(d,e){d=d||"toggle";
var b=this.get("slide"),a;switch(d){case"hide":b.hide(e);break;case"show":b.show(e);break;case"toggle":var c=this.retrieve("slide:flag",b.open);b[c?"slideOut":"slideIn"](e);
this.store("slide:flag",!c);a=true;break;default:b.start(d,e);}if(!a){this.eliminate("slide:flag");}return this;}});var Drag=new Class({Implements:[Events,Options],options:{snap:6,unit:"px",grid:false,style:true,limit:false,handle:false,invert:false,preventDefault:false,stopPropagation:false,modifiers:{x:"left",y:"top"}},initialize:function(){var b=Array.link(arguments,{options:Object.type,element:$defined});
this.element=document.id(b.element);this.document=this.element.getDocument();this.setOptions(b.options||{});var a=$type(this.options.handle);this.handles=((a=="array"||a=="collection")?$$(this.options.handle):document.id(this.options.handle))||this.element;
this.mouse={now:{},pos:{}};this.value={start:{},now:{}};this.selection=(Browser.Engine.trident)?"selectstart":"mousedown";this.bound={start:this.start.bind(this),check:this.check.bind(this),drag:this.drag.bind(this),stop:this.stop.bind(this),cancel:this.cancel.bind(this),eventStop:$lambda(false)};
this.attach();},attach:function(){this.handles.addEvent("mousedown",this.bound.start);return this;},detach:function(){this.handles.removeEvent("mousedown",this.bound.start);
return this;},start:function(c){if(c.rightClick){return;}if(this.options.preventDefault){c.preventDefault();}if(this.options.stopPropagation){c.stopPropagation();
}this.mouse.start=c.page;this.fireEvent("beforeStart",this.element);var a=this.options.limit;this.limit={x:[],y:[]};for(var d in this.options.modifiers){if(!this.options.modifiers[d]){continue;
}if(this.options.style){this.value.now[d]=this.element.getStyle(this.options.modifiers[d]).toInt();}else{this.value.now[d]=this.element[this.options.modifiers[d]];
}if(this.options.invert){this.value.now[d]*=-1;}this.mouse.pos[d]=c.page[d]-this.value.now[d];if(a&&a[d]){for(var b=2;b--;b){if($chk(a[d][b])){this.limit[d][b]=$lambda(a[d][b])();
}}}}if($type(this.options.grid)=="number"){this.options.grid={x:this.options.grid,y:this.options.grid};}this.document.addEvents({mousemove:this.bound.check,mouseup:this.bound.cancel});
this.document.addEvent(this.selection,this.bound.eventStop);},check:function(a){if(this.options.preventDefault){a.preventDefault();}var b=Math.round(Math.sqrt(Math.pow(a.page.x-this.mouse.start.x,2)+Math.pow(a.page.y-this.mouse.start.y,2)));
if(b>this.options.snap){this.cancel();this.document.addEvents({mousemove:this.bound.drag,mouseup:this.bound.stop});this.fireEvent("start",[this.element,a]).fireEvent("snap",this.element);
}},drag:function(a){if(this.options.preventDefault){a.preventDefault();}this.mouse.now=a.page;for(var b in this.options.modifiers){if(!this.options.modifiers[b]){continue;
}this.value.now[b]=this.mouse.now[b]-this.mouse.pos[b];if(this.options.invert){this.value.now[b]*=-1;}if(this.options.limit&&this.limit[b]){if($chk(this.limit[b][1])&&(this.value.now[b]>this.limit[b][1])){this.value.now[b]=this.limit[b][1];
}else{if($chk(this.limit[b][0])&&(this.value.now[b]<this.limit[b][0])){this.value.now[b]=this.limit[b][0];}}}if(this.options.grid[b]){this.value.now[b]-=((this.value.now[b]-(this.limit[b][0]||0))%this.options.grid[b]);
}if(this.options.style){this.element.setStyle(this.options.modifiers[b],this.value.now[b]+this.options.unit);}else{this.element[this.options.modifiers[b]]=this.value.now[b];
}}this.fireEvent("drag",[this.element,a]);},cancel:function(a){this.document.removeEvent("mousemove",this.bound.check);this.document.removeEvent("mouseup",this.bound.cancel);
if(a){this.document.removeEvent(this.selection,this.bound.eventStop);this.fireEvent("cancel",this.element);}},stop:function(a){this.document.removeEvent(this.selection,this.bound.eventStop);
this.document.removeEvent("mousemove",this.bound.drag);this.document.removeEvent("mouseup",this.bound.stop);if(a){this.fireEvent("complete",[this.element,a]);
}}});Element.implement({makeResizable:function(a){var b=new Drag(this,$merge({modifiers:{x:"width",y:"height"}},a));this.store("resizer",b);return b.addEvent("drag",function(){this.fireEvent("resize",b);
}.bind(this));}});Drag.Move=new Class({Extends:Drag,options:{droppables:[],container:false,precalculate:false,includeMargins:true,checkDroppables:true},initialize:function(b,a){this.parent(b,a);
b=this.element;this.droppables=$$(this.options.droppables);this.container=document.id(this.options.container);if(this.container&&$type(this.container)!="element"){this.container=document.id(this.container.getDocument().body);
}var c=b.getStyles("left","right","position");if(c.left=="auto"||c.top=="auto"){b.setPosition(b.getPosition(b.getOffsetParent()));}if(c.position=="static"){b.setStyle("position","absolute");
}this.addEvent("start",this.checkDroppables,true);this.overed=null;},start:function(a){if(this.container){this.options.limit=this.calculateLimit();}if(this.options.precalculate){this.positions=this.droppables.map(function(b){return b.getCoordinates();
});}this.parent(a);},calculateLimit:function(){var d=this.element.getOffsetParent(),g=this.container.getCoordinates(d),f={},c={},b={},i={},k={};["top","right","bottom","left"].each(function(o){f[o]=this.container.getStyle("border-"+o).toInt();
b[o]=this.element.getStyle("border-"+o).toInt();c[o]=this.element.getStyle("margin-"+o).toInt();i[o]=this.container.getStyle("margin-"+o).toInt();k[o]=d.getStyle("padding-"+o).toInt();
},this);var e=this.element.offsetWidth+c.left+c.right,n=this.element.offsetHeight+c.top+c.bottom,h=0,j=0,m=g.right-f.right-e,a=g.bottom-f.bottom-n;if(this.options.includeMargins){h+=c.left;
j+=c.top;}else{m+=c.right;a+=c.bottom;}if(this.element.getStyle("position")=="relative"){var l=this.element.getCoordinates(d);l.left-=this.element.getStyle("left").toInt();
l.top-=this.element.getStyle("top").toInt();h+=f.left-l.left;j+=f.top-l.top;m+=c.left-l.left;a+=c.top-l.top;if(this.container!=d){h+=i.left+k.left;j+=(Browser.Engine.trident4?0:i.top)+k.top;
}}else{h-=c.left;j-=c.top;if(this.container==d){m-=f.left;a-=f.top;}else{h+=g.left+f.left;j+=g.top+f.top;}}return{x:[h,m],y:[j,a]};},checkAgainst:function(c,b){c=(this.positions)?this.positions[b]:c.getCoordinates();
var a=this.mouse.now;return(a.x>c.left&&a.x<c.right&&a.y<c.bottom&&a.y>c.top);},checkDroppables:function(){var a=this.droppables.filter(this.checkAgainst,this).getLast();
if(this.overed!=a){if(this.overed){this.fireEvent("leave",[this.element,this.overed]);}if(a){this.fireEvent("enter",[this.element,a]);}this.overed=a;}},drag:function(a){this.parent(a);
if(this.options.checkDroppables&&this.droppables.length){this.checkDroppables();}},stop:function(a){this.checkDroppables();this.fireEvent("drop",[this.element,this.overed,a]);
this.overed=null;return this.parent(a);}});Element.implement({makeDraggable:function(a){var b=new Drag.Move(this,a);this.store("dragger",b);return b;}});
var Scroller=new Class({Implements:[Events,Options],options:{area:20,velocity:1,onChange:function(a,b){this.element.scrollTo(a,b);},fps:50},initialize:function(b,a){this.setOptions(a);
this.element=document.id(b);this.listener=($type(this.element)!="element")?document.id(this.element.getDocument().body):this.element;this.timer=null;this.bound={attach:this.attach.bind(this),detach:this.detach.bind(this),getCoords:this.getCoords.bind(this)};
},start:function(){this.listener.addEvents({mouseover:this.bound.attach,mouseout:this.bound.detach});},stop:function(){this.listener.removeEvents({mouseover:this.bound.attach,mouseout:this.bound.detach});
this.detach();this.timer=$clear(this.timer);},attach:function(){this.listener.addEvent("mousemove",this.bound.getCoords);},detach:function(){this.listener.removeEvent("mousemove",this.bound.getCoords);
this.timer=$clear(this.timer);},getCoords:function(a){this.page=(this.listener.get("tag")=="body")?a.client:a.page;if(!this.timer){this.timer=this.scroll.periodical(Math.round(1000/this.options.fps),this);
}},scroll:function(){var b=this.element.getSize(),a=this.element.getScroll(),f=this.element.getOffsets(),c=this.element.getScrollSize(),e={x:0,y:0};for(var d in this.page){if(this.page[d]<(this.options.area+f[d])&&a[d]!=0){e[d]=(this.page[d]-this.options.area-f[d])*this.options.velocity;
}else{if(this.page[d]+this.options.area>(b[d]+f[d])&&a[d]+b[d]!=c[d]){e[d]=(this.page[d]-b[d]+this.options.area-f[d])*this.options.velocity;}}}if(e.y||e.x){this.fireEvent("change",[a.x+e.x,a.y+e.y]);
}}});(function(){var a=function(c,b){return(c)?($type(c)=="function"?c(b):b.get(c)):"";};this.Tips=new Class({Implements:[Events,Options],options:{onShow:function(){this.tip.setStyle("display","block");
},onHide:function(){this.tip.setStyle("display","none");},title:"title",text:function(b){return b.get("rel")||b.get("href");},showDelay:100,hideDelay:100,className:"tip-wrap",offset:{x:16,y:16},fixed:false},initialize:function(){var b=Array.link(arguments,{options:Object.type,elements:$defined});
this.setOptions(b.options);document.id(this);if(b.elements){this.attach(b.elements);}},toElement:function(){if(this.tip){return this.tip;}this.container=new Element("div",{"class":"tip"});
return this.tip=new Element("div",{"class":this.options.className,styles:{position:"absolute",top:0,left:0}}).adopt(new Element("div",{"class":"tip-top"}),this.container,new Element("div",{"class":"tip-bottom"})).inject(document.body);
},attach:function(b){$$(b).each(function(d){var f=a(this.options.title,d),e=a(this.options.text,d);d.erase("title").store("tip:native",f).retrieve("tip:title",f);
d.retrieve("tip:text",e);this.fireEvent("attach",[d]);var c=["enter","leave"];if(!this.options.fixed){c.push("move");}c.each(function(h){var g=d.retrieve("tip:"+h);
if(!g){g=this["element"+h.capitalize()].bindWithEvent(this,d);}d.store("tip:"+h,g).addEvent("mouse"+h,g);},this);},this);return this;},detach:function(b){$$(b).each(function(d){["enter","leave","move"].each(function(e){d.removeEvent("mouse"+e,d.retrieve("tip:"+e)).eliminate("tip:"+e);
});this.fireEvent("detach",[d]);if(this.options.title=="title"){var c=d.retrieve("tip:native");if(c){d.set("title",c);}}},this);return this;},elementEnter:function(c,b){this.container.empty();
["title","text"].each(function(e){var d=b.retrieve("tip:"+e);if(d){this.fill(new Element("div",{"class":"tip-"+e}).inject(this.container),d);}},this);$clear(this.timer);
this.timer=this.show.delay(this.options.showDelay,this,b);this.position((this.options.fixed)?{page:b.getPosition()}:c);},elementLeave:function(c,b){$clear(this.timer);
this.timer=this.hide.delay(this.options.hideDelay,this,b);this.fireForParent(c,b);},fireForParent:function(c,b){if(!b){return;}parentNode=b.getParent();
if(parentNode==document.body){return;}if(parentNode.retrieve("tip:enter")){parentNode.fireEvent("mouseenter",c);}else{this.fireForParent(parentNode,c);
}},elementMove:function(c,b){this.position(c);},position:function(e){var c=window.getSize(),b=window.getScroll(),f={x:this.tip.offsetWidth,y:this.tip.offsetHeight},d={x:"left",y:"top"},g={};
for(var h in d){g[d[h]]=e.page[h]+this.options.offset[h];if((g[d[h]]+f[h]-b[h])>c[h]){g[d[h]]=e.page[h]-this.options.offset[h]-f[h];}}this.tip.setStyles(g);
},fill:function(b,c){if(typeof c=="string"){b.set("html",c);}else{b.adopt(c);}},show:function(b){this.fireEvent("show",[this.tip,b]);},hide:function(b){this.fireEvent("hide",[this.tip,b]);
}});})();
var Asset = {
    javascript: function(source, properties) {
        properties = $extend({
            onload: $empty,
            document: document,
            check: $lambda(true)
        }, properties);

        var script = new Element('script', { src: source, type: 'text/javascript' });

        var load = properties.onload.bind(script),
           check = properties.check,
           doc = properties.document;
        delete properties.onload;
        delete properties.check;
        delete properties.document;

        script.addEvents({
            load: load,
            readystatechange: function() {
                if (['loaded', 'complete'].contains(this.readyState)) load();
            }
        }).set(properties);

        if (Browser.Engine.webkit419) var checker = (function() {
            if (!$try(check)) return;
            $clear(checker);
            load();
        }).periodical(50);

        return script.inject(doc.head);
    },

    css: function(source, properties) {
        return new Element('link', $merge({
            rel: 'stylesheet',
            media: 'screen',
            type: 'text/css',
            href: source
        }, properties)).inject(document.head);
    },

    image: function(source, properties) {
        properties = $merge({
            onload: $empty,
            onabort: $empty,
            onerror: $empty
        }, properties);
        var image = new Image();
        var element = document.id(image) || new Element('img');
        ['load', 'abort', 'error'].each(function(name) {
            var type = 'on' + name;
            var event = properties[type];
            delete properties[type];
            image[type] = function() {
                if (!image) return;
                if (!element.parentNode) {
                    element.width = image.width;
                    element.height = image.height;
                }
                image = image.onload = image.onabort = image.onerror = null;
                event.delay(1, element, element);
                element.fireEvent(name, element, 1);
            };
        });
        image.src = element.src = source;
        if (image && image.complete) image.onload.delay(1);
        return element.set(properties);
    },

    images: function(sources, options) {
        options = $merge({
            onComplete: $empty,
            onProgress: $empty,
            onError: $empty,
            properties: {}
        }, options);
        sources = $splat(sources);
        var images = [];
        var counter = 0;
        return new Elements(sources.map(function(source) {
            return Asset.image(source, $extend(options.properties, {
                onload: function() {
                    options.onProgress.call(this, counter, sources.indexOf(source));
                    counter++;
                    if (counter == sources.length) options.onComplete();
                },
                onerror: function() {
                    options.onError.call(this, counter, sources.indexOf(source));
                    counter++;
                    if (counter == sources.length) options.onComplete();
                }
            }));
        }));
    }
};