var Drag=new Class({Implements:[Events,Options],options:{snap:6,unit:"px",grid:false,style:true,limit:false,handle:false,invert:false,preventDefault:false,modifiers:{x:"left",y:"top"}},initialize:function(){var b=Array.link(arguments,{options:Object.type,element:$defined});this.element=$(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):$(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(this.options.preventDefault){c.preventDefault()}this.fireEvent("beforeStart",this.element);this.mouse.start=c.page;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).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.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)},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)}}});Element.implement({makeResizable:function(a){return new Drag(this,$merge({modifiers:{x:"width",y:"height"}},a))}});Drag.Move=new Class({Extends:Drag,options:{droppables:[],container:false},initialize:function(c,b){this.parent(c,b);this.droppables=$$(this.options.droppables);this.container=$(this.options.container);if(this.container&&$type(this.container)!="element"){this.container=$(this.container.getDocument().body)}c=this.element;var d=c.getStyle("position");var a=(d!="static")?d:"absolute";if(c.getStyle("left")=="auto"||c.getStyle("top")=="auto"){c.position(c.getPosition(c.offsetParent))}c.setStyle("position",a);this.addEvent("start",function(){this.checkDroppables()},true)},start:function(b){if(this.container){var d=this.element,j=this.container,e=j.getCoordinates(d.offsetParent),f={},a={};["top","right","bottom","left"].each(function(k){f[k]=j.getStyle("padding-"+k).toInt();a[k]=d.getStyle("margin-"+k).toInt()},this);var c=d.offsetWidth+a.left+a.right,i=d.offsetHeight+a.top+a.bottom;var h=[e.left+f.left,e.right-f.right-c];var g=[e.top+f.top,e.bottom-f.bottom-i];this.options.limit={x:h,y:g}}this.parent(b)},checkAgainst:function(b){b=b.getCoordinates();var a=this.mouse.now;return(a.x>b.left&&a.x<b.right&&a.y<b.bottom&&a.y>b.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.overed=a;this.fireEvent("enter",[this.element,a])}else{this.overed=null}}},drag:function(a){this.parent(a);if(this.droppables.length){this.checkDroppables()}},stop:function(a){this.checkDroppables();this.fireEvent("drop",[this.element,this.overed]);this.overed=null;return this.parent(a)}});Element.implement({makeDraggable:function(a){return new Drag.Move(this,a)}});Hash.Cookie=new Class({Extends:Cookie,options:{autoSave:true},initialize:function(b,a){this.parent(b,a);this.load()},save:function(){var a=JSON.encode(this.hash);if(!a||a.length>4096){return false}if(a=="{}"){this.dispose()}else{this.write(a)}return true},load:function(){this.hash=new Hash(JSON.decode(this.read(),true));return this}});Hash.Cookie.implement((function(){var a={};Hash.each(Hash.prototype,function(c,b){a[b]=function(){var d=c.apply(this.hash,arguments);if(this.options.autoSave){this.save()}return d}});return a})());var Asset=new Hash({javascript:function(f,d){d=$extend({onload:$empty,document:document,check:$lambda(true)},d);var b=new Element("script",{src:f,type:"text/javascript"});var e=d.onload.bind(b),a=d.check,g=d.document;delete d.onload;delete d.check;delete d.document;b.addEvents({load:e,readystatechange:function(){if(["loaded","complete"].contains(this.readyState)){e()}}}).setProperties(d);if(Browser.Engine.webkit419){var c=(function(){if(!$try(a)){return}$clear(c);e()}).periodical(50)}return b.inject(g.head)},css:function(b,a){return new Element("link",$merge({rel:"stylesheet",media:"screen",type:"text/css",href:b},a)).inject(document.head)},image:function(c,b){b=$merge({onload:$empty,onabort:$empty,onerror:$empty},b);var d=new Image();var a=$(d)||new Element("img");["load","abort","error"].each(function(e){var f="on"+e;var g=b[f];delete b[f];d[f]=function(){if(!d){return}if(!a.parentNode){a.width=d.width;a.height=d.height}d=d.onload=d.onabort=d.onerror=null;g.delay(1,a,a);a.fireEvent(e,a,1)}});d.src=a.src=c;if(d&&d.complete){d.onload.delay(1)}return a.setProperties(b)},images:function(d,c){c=$merge({onComplete:$empty,onProgress:$empty},c);if(!d.push){d=[d]}var a=[];var b=0;d.each(function(f){var e=new Asset.image(f,{onload:function(){c.onProgress.call(this,b,d.indexOf(f));b++;if(b==d.length){c.onComplete()}}});a.push(e)});return new Elements(a)}});