// MooTools: the javascript framework.
// Load this file's selection again by visiting: http://mootools.net/more/e79578b99b6d5da8097a130cadda4176 
// Or build this file again with packager using: packager build More/Element.Shortcuts More/Assets More/Scroller
/*
---
copyrights:
  - [MooTools](http://mootools.net)

licenses:
  - [MIT License](http://mootools.net/license.txt)
...
*/
MooTools.More={version:"1.4.0.1",build:"a4244edf2aa97ac8a196fc96082dd35af1abab87"};Element.implement({isDisplayed:function(){return this.getStyle("display")!="none";
},isVisible:function(){var a=this.offsetWidth,b=this.offsetHeight;return(a==0&&b==0)?false:(a>0&&b>0)?true:this.style.display!="none";},toggle:function(){return this[this.isDisplayed()?"hide":"show"]();
},hide:function(){var b;try{b=this.getStyle("display");}catch(a){}if(b=="none"){return this;}return this.store("element:_originalDisplay",b||"").setStyle("display","none");
},show:function(a){if(!a&&this.isDisplayed()){return this;}a=a||this.retrieve("element:_originalDisplay")||"block";return this.setStyle("display",(a=="none")?"block":a);
},swapClass:function(a,b){return this.removeClass(a).addClass(b);}});Document.implement({clearSelection:function(){if(window.getSelection){var a=window.getSelection();
if(a&&a.removeAllRanges){a.removeAllRanges();}}else{if(document.selection&&document.selection.empty){try{document.selection.empty();}catch(b){}}}}});var Asset={javascript:function(d,b){if(!b){b={};
}var a=new Element("script",{src:d,type:"text/javascript"}),e=b.document||document,c=b.onload||b.onLoad;delete b.onload;delete b.onLoad;delete b.document;
if(c){if(typeof a.onreadystatechange!="undefined"){a.addEvent("readystatechange",function(){if(["loaded","complete"].contains(this.readyState)){c.call(this);
}});}else{a.addEvent("load",c);}}return a.set(b).inject(e.head);},css:function(d,a){if(!a){a={};}var b=new Element("link",{rel:"stylesheet",media:"screen",type:"text/css",href:d});
var c=a.onload||a.onLoad,e=a.document||document;delete a.onload;delete a.onLoad;delete a.document;if(c){b.addEvent("load",c);}return b.set(a).inject(e.head);
},image:function(c,b){if(!b){b={};}var d=new Image(),a=document.id(d)||new Element("img");["load","abort","error"].each(function(e){var g="on"+e,f="on"+e.capitalize(),h=b[g]||b[f]||function(){};
delete b[f];delete b[g];d[g]=function(){if(!d){return;}if(!a.parentNode){a.width=d.width;a.height=d.height;}d=d.onload=d.onabort=d.onerror=null;h.delay(1,a,a);
a.fireEvent(e,a,1);};});d.src=a.src=c;if(d&&d.complete){d.onload.delay(1);}return a.set(b);},images:function(c,b){c=Array.from(c);var d=function(){},a=0;
b=Object.merge({onComplete:d,onProgress:d,onError:d,properties:{}},b);return new Elements(c.map(function(f,e){return Asset.image(f,Object.append(b.properties,{onload:function(){a++;
b.onProgress.call(this,a,e,f);if(a==c.length){b.onComplete();}},onerror:function(){a++;b.onError.call(this,a,e,f);if(a==c.length){b.onComplete();}}}));
}));}};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.docBody=document.id(this.element.getDocument().body);this.listener=(typeOf(this.element)!="element")?this.docBody: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,mouseleave:this.bound.detach});
return this;},stop:function(){this.listener.removeEvents({mouseover:this.bound.attach,mouseleave:this.bound.detach});this.detach();this.timer=clearInterval(this.timer);
return this;},attach:function(){this.listener.addEvent("mousemove",this.bound.getCoords);},detach:function(){this.listener.removeEvent("mousemove",this.bound.getCoords);
this.timer=clearInterval(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 c=this.element.getSize(),a=this.element.getScroll(),h=this.element!=this.docBody?this.element.getOffsets():{x:0,y:0},d=this.element.getScrollSize(),g={x:0,y:0},e=this.options.area.top||this.options.area,b=this.options.area.bottom||this.options.area;
for(var f in this.page){if(this.page[f]<(e+h[f])&&a[f]!=0){g[f]=(this.page[f]-e-h[f])*this.options.velocity;}else{if(this.page[f]+b>(c[f]+h[f])&&a[f]+c[f]!=d[f]){g[f]=(this.page[f]-c[f]+b-h[f])*this.options.velocity;
}}g[f]=g[f].round();}if(g.y||g.x){this.fireEvent("change",[a.x+g.x,a.y+g.y]);}}});