if(Object.isUndefined(Effect)){throw ("dragdrop.js requires including script.aculo.us' effects.js library")
}var Droppables={drops:[],remove:function(a){this.drops=this.drops.reject(function(b){return b.element==$(a)
})
},add:function(b){b=$(b);
var a=Object.extend({greedy:true,hoverclass:null,tree:false},arguments[1]||{});
if(a.containment){a._containers=[];
var c=a.containment;
if(Object.isArray(c)){c.each(function(d){a._containers.push($(d))
})
}else{a._containers.push($(c))
}}if(a.accept){a.accept=[a.accept].flatten()
}Element.makePositioned(b);
a.element=b;
this.drops.push(a)
},findDeepestChild:function(a){deepest=a[0];
for(i=1;
i<a.length;
++i){if(Element.isParent(a[i].element,deepest.element)){deepest=a[i]
}}return deepest
},isContained:function(b,a){var c;
if(a.tree){c=b.treeNode
}else{c=b.parentNode
}return a._containers.detect(function(d){return c==d
})
},isAffected:function(a,c,b){return((b.element!=c)&&((!b._containers)||this.isContained(c,b))&&((!b.accept)||(Element.classNames(c).detect(function(d){return b.accept.include(d)
})))&&Position.within(b.element,a[0],a[1]))
},deactivate:function(a){if(a.hoverclass){Element.removeClassName(a.element,a.hoverclass)
}this.last_active=null
},activate:function(a){if(a.hoverclass){Element.addClassName(a.element,a.hoverclass)
}this.last_active=a
},show:function(a,c){if(!this.drops.length){return
}var b,d=[];
this.drops.each(function(e){if(Droppables.isAffected(a,c,e)){d.push(e)
}});
if(d.length>0){b=Droppables.findDeepestChild(d)
}if(this.last_active&&this.last_active!=b){this.deactivate(this.last_active)
}if(b){Position.within(b.element,a[0],a[1]);
if(b.onHover){b.onHover(c,b.element,Position.overlap(b.overlap,b.element))
}if(b!=this.last_active){Droppables.activate(b)
}}},fire:function(b,a){if(!this.last_active){return
}Position.prepare();
if(this.isAffected([Event.pointerX(b),Event.pointerY(b)],a,this.last_active)){if(this.last_active.onDrop){this.last_active.onDrop(a,this.last_active.element,b);
return true
}}},reset:function(){if(this.last_active){this.deactivate(this.last_active)
}}};
var Draggables={drags:[],observers:[],register:function(a){if(this.drags.length==0){this.eventMouseUp=this.endDrag.bindAsEventListener(this);
this.eventMouseMove=this.updateDrag.bindAsEventListener(this);
this.eventKeypress=this.keyPress.bindAsEventListener(this);
Event.observe(document,"mouseup",this.eventMouseUp);
Event.observe(document,"mousemove",this.eventMouseMove);
Event.observe(document,"keypress",this.eventKeypress)
}this.drags.push(a)
},unregister:function(a){this.drags=this.drags.reject(function(b){return b==a
});
if(this.drags.length==0){Event.stopObserving(document,"mouseup",this.eventMouseUp);
Event.stopObserving(document,"mousemove",this.eventMouseMove);
Event.stopObserving(document,"keypress",this.eventKeypress)
}},activate:function(a){if(a.options.delay){this._timeout=setTimeout(function(){Draggables._timeout=null;
window.focus();
Draggables.activeDraggable=a
}.bind(this),a.options.delay)
}else{window.focus();
this.activeDraggable=a
}},deactivate:function(){this.activeDraggable=null
},updateDrag:function(a){if(!this.activeDraggable){return
}var b=[Event.pointerX(a),Event.pointerY(a)];
if(this._lastPointer&&(this._lastPointer.inspect()==b.inspect())){return
}this._lastPointer=b;
this.activeDraggable.updateDrag(a,b)
},endDrag:function(a){if(this._timeout){clearTimeout(this._timeout);
this._timeout=null
}if(!this.activeDraggable){return
}this._lastPointer=null;
this.activeDraggable.endDrag(a);
this.activeDraggable=null
},keyPress:function(a){if(this.activeDraggable){this.activeDraggable.keyPress(a)
}},addObserver:function(a){this.observers.push(a);
this._cacheObserverCallbacks()
},removeObserver:function(a){this.observers=this.observers.reject(function(b){return b.element==a
});
this._cacheObserverCallbacks()
},notify:function(b,a,c){if(this[b+"Count"]>0){this.observers.each(function(d){if(d[b]){d[b](b,a,c)
}})
}if(a.options[b]){a.options[b](a,c)
}},_cacheObserverCallbacks:function(){["onStart","onEnd","onDrag"].each(function(a){Draggables[a+"Count"]=Draggables.observers.select(function(b){return b[a]
}).length
})
}};
var Draggable=Class.create({initialize:function(b){var c={handle:false,reverteffect:function(f,e,d){var g=Math.sqrt(Math.abs(e^2)+Math.abs(d^2))*0.02;
new Effect.Move(f,{x:-d,y:-e,duration:g,queue:{scope:"_draggable",position:"end"}})
},endeffect:function(e){var d=Object.isNumber(e._opacity)?e._opacity:1;
new Effect.Opacity(e,{duration:0.2,from:0.7,to:d,queue:{scope:"_draggable",position:"end"},afterFinish:function(){Draggable._dragging[e]=false
}})
},zindex:1000,revert:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,snap:false,delay:0};
if(!arguments[1]||Object.isUndefined(arguments[1].endeffect)){Object.extend(c,{starteffect:function(d){d._opacity=Element.getOpacity(d);
Draggable._dragging[d]=true;
new Effect.Opacity(d,{duration:0.2,from:d._opacity,to:0.7})
}})
}var a=Object.extend(c,arguments[1]||{});
this.element=$(b);
if(a.handle&&Object.isString(a.handle)){this.handle=this.element.down("."+a.handle,0)
}if(!this.handle){this.handle=$(a.handle)
}if(!this.handle){this.handle=this.element
}if(a.scroll&&!a.scroll.scrollTo&&!a.scroll.outerHTML){a.scroll=$(a.scroll);
this._isScrollChild=Element.childOf(this.element,a.scroll)
}Element.makePositioned(this.element);
this.options=a;
this.dragging=false;
this.eventMouseDown=this.initDrag.bindAsEventListener(this);
Event.observe(this.handle,"mousedown",this.eventMouseDown);
Draggables.register(this)
},destroy:function(){Event.stopObserving(this.handle,"mousedown",this.eventMouseDown);
Draggables.unregister(this)
},currentDelta:function(){return([parseInt(Element.getStyle(this.element,"left")||"0"),parseInt(Element.getStyle(this.element,"top")||"0")])
},initDrag:function(a){if(!Object.isUndefined(Draggable._dragging[this.element])&&Draggable._dragging[this.element]){return
}if(Event.isLeftClick(a)){var c=Event.element(a);
if((tag_name=c.tagName.toUpperCase())&&(tag_name=="INPUT"||tag_name=="SELECT"||tag_name=="OPTION"||tag_name=="BUTTON"||tag_name=="TEXTAREA")){return
}var b=[Event.pointerX(a),Event.pointerY(a)];
var d=this.element.cumulativeOffset();
this.offset=[0,1].map(function(e){return(b[e]-d[e])
});
Draggables.activate(this);
Event.stop(a)
}},startDrag:function(b){this.dragging=true;
if(!this.delta){this.delta=this.currentDelta()
}if(this.options.zindex){this.originalZ=parseInt(Element.getStyle(this.element,"z-index")||0);
this.element.style.zIndex=this.options.zindex
}if(this.options.ghosting){this._clone=this.element.cloneNode(true);
this._originallyAbsolute=(this.element.getStyle("position")=="absolute");
if(!this._originallyAbsolute){Position.absolutize(this.element)
}this.element.parentNode.insertBefore(this._clone,this.element)
}if(this.options.scroll){if(this.options.scroll==window){var a=this._getWindowScroll(this.options.scroll);
this.originalScrollLeft=a.left;
this.originalScrollTop=a.top
}else{this.originalScrollLeft=this.options.scroll.scrollLeft;
this.originalScrollTop=this.options.scroll.scrollTop
}}Draggables.notify("onStart",this,b);
if(this.options.starteffect){this.options.starteffect(this.element)
}},updateDrag:function(event,pointer){if(!this.dragging){this.startDrag(event)
}if(!this.options.quiet){Position.prepare();
Droppables.show(pointer,this.element)
}Draggables.notify("onDrag",this,event);
this.draw(pointer);
if(this.options.change){this.options.change(this)
}if(this.options.scroll){this.stopScrolling();
var p;
if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){p=[left,top,left+width,top+height]
}}else{p=Position.page(this.options.scroll).toArray();
p[0]+=this.options.scroll.scrollLeft+Position.deltaX;
p[1]+=this.options.scroll.scrollTop+Position.deltaY;
p.push(p[0]+this.options.scroll.offsetWidth);
p.push(p[1]+this.options.scroll.offsetHeight)
}var speed=[0,0];
if(pointer[0]<(p[0]+this.options.scrollSensitivity)){speed[0]=pointer[0]-(p[0]+this.options.scrollSensitivity)
}if(pointer[1]<(p[1]+this.options.scrollSensitivity)){speed[1]=pointer[1]-(p[1]+this.options.scrollSensitivity)
}if(pointer[0]>(p[2]-this.options.scrollSensitivity)){speed[0]=pointer[0]-(p[2]-this.options.scrollSensitivity)
}if(pointer[1]>(p[3]-this.options.scrollSensitivity)){speed[1]=pointer[1]-(p[3]-this.options.scrollSensitivity)
}this.startScrolling(speed)
}if(Prototype.Browser.WebKit){window.scrollBy(0,0)
}Event.stop(event)
},finishDrag:function(b,f){this.dragging=false;
if(this.options.quiet){Position.prepare();
var e=[Event.pointerX(b),Event.pointerY(b)];
Droppables.show(e,this.element)
}if(this.options.ghosting){if(!this._originallyAbsolute){Position.relativize(this.element)
}delete this._originallyAbsolute;
Element.remove(this._clone);
this._clone=null
}var g=false;
if(f){g=Droppables.fire(b,this.element);
if(!g){g=false
}}if(g&&this.options.onDropped){this.options.onDropped(this.element)
}Draggables.notify("onEnd",this,b);
var a=this.options.revert;
if(a&&Object.isFunction(a)){a=a(this.element)
}var c=this.currentDelta();
if(a&&this.options.reverteffect){if(g==0||a!="failure"){this.options.reverteffect(this.element,c[1]-this.delta[1],c[0]-this.delta[0])
}}else{this.delta=c
}if(this.options.zindex){this.element.style.zIndex=this.originalZ
}if(this.options.endeffect){this.options.endeffect(this.element)
}Draggables.deactivate(this);
Droppables.reset()
},keyPress:function(a){if(a.keyCode!=Event.KEY_ESC){return
}this.finishDrag(a,false);
Event.stop(a)
},endDrag:function(a){if(!this.dragging){return
}this.stopScrolling();
this.finishDrag(a,true);
Event.stop(a)
},draw:function(a){var g=this.element.cumulativeOffset();
if(this.options.ghosting){var c=Position.realOffset(this.element);
g[0]+=c[0]-Position.deltaX;
g[1]+=c[1]-Position.deltaY
}var f=this.currentDelta();
g[0]-=f[0];
g[1]-=f[1];
if(this.options.scroll&&(this.options.scroll!=window&&this._isScrollChild)){g[0]-=this.options.scroll.scrollLeft-this.originalScrollLeft;
g[1]-=this.options.scroll.scrollTop-this.originalScrollTop
}var e=[0,1].map(function(d){return(a[d]-g[d]-this.offset[d])
}.bind(this));
if(this.options.snap){if(Object.isFunction(this.options.snap)){e=this.options.snap(e[0],e[1],this)
}else{if(Object.isArray(this.options.snap)){e=e.map(function(d,h){return(d/this.options.snap[h]).round()*this.options.snap[h]
}.bind(this))
}else{e=e.map(function(d){return(d/this.options.snap).round()*this.options.snap
}.bind(this))
}}}var b=this.element.style;
if((!this.options.constraint)||(this.options.constraint=="horizontal")){b.left=e[0]+"px"
}if((!this.options.constraint)||(this.options.constraint=="vertical")){b.top=e[1]+"px"
}if(b.visibility=="hidden"){b.visibility=""
}},stopScrolling:function(){if(this.scrollInterval){clearInterval(this.scrollInterval);
this.scrollInterval=null;
Draggables._lastScrollPointer=null
}},startScrolling:function(a){if(!(a[0]||a[1])){return
}this.scrollSpeed=[a[0]*this.options.scrollSpeed,a[1]*this.options.scrollSpeed];
this.lastScrolled=new Date();
this.scrollInterval=setInterval(this.scroll.bind(this),10)
},scroll:function(){var current=new Date();
var delta=current-this.lastScrolled;
this.lastScrolled=current;
if(this.options.scroll==window){with(this._getWindowScroll(this.options.scroll)){if(this.scrollSpeed[0]||this.scrollSpeed[1]){var d=delta/1000;
this.options.scroll.scrollTo(left+d*this.scrollSpeed[0],top+d*this.scrollSpeed[1])
}}}else{this.options.scroll.scrollLeft+=this.scrollSpeed[0]*delta/1000;
this.options.scroll.scrollTop+=this.scrollSpeed[1]*delta/1000
}Position.prepare();
Droppables.show(Draggables._lastPointer,this.element);
Draggables.notify("onDrag",this);
if(this._isScrollChild){Draggables._lastScrollPointer=Draggables._lastScrollPointer||$A(Draggables._lastPointer);
Draggables._lastScrollPointer[0]+=this.scrollSpeed[0]*delta/1000;
Draggables._lastScrollPointer[1]+=this.scrollSpeed[1]*delta/1000;
if(Draggables._lastScrollPointer[0]<0){Draggables._lastScrollPointer[0]=0
}if(Draggables._lastScrollPointer[1]<0){Draggables._lastScrollPointer[1]=0
}this.draw(Draggables._lastScrollPointer)
}if(this.options.change){this.options.change(this)
}},_getWindowScroll:function(w){var T,L,W,H;
with(w.document){if(w.document.documentElement&&documentElement.scrollTop){T=documentElement.scrollTop;
L=documentElement.scrollLeft
}else{if(w.document.body){T=body.scrollTop;
L=body.scrollLeft
}}if(w.innerWidth){W=w.innerWidth;
H=w.innerHeight
}else{if(w.document.documentElement&&documentElement.clientWidth){W=documentElement.clientWidth;
H=documentElement.clientHeight
}else{W=body.offsetWidth;
H=body.offsetHeight
}}}return{top:T,left:L,width:W,height:H}
}});
Draggable._dragging={};
var SortableObserver=Class.create({initialize:function(b,a){this.element=$(b);
this.observer=a;
this.lastValue=Sortable.serialize(this.element)
},onStart:function(){this.lastValue=Sortable.serialize(this.element)
},onEnd:function(){Sortable.unmark();
if(this.lastValue!=Sortable.serialize(this.element)){this.observer(this.element)
}}});
var Sortable={SERIALIZE_RULE:/^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,sortables:{},_findRootElement:function(a){while(a.tagName.toUpperCase()!="BODY"){if(a.id&&Sortable.sortables[a.id]){return a
}a=a.parentNode
}},options:function(a){a=Sortable._findRootElement($(a));
if(!a){return
}return Sortable.sortables[a.id]
},destroy:function(a){a=$(a);
var b=Sortable.sortables[a.id];
if(b){Draggables.removeObserver(b.element);
b.droppables.each(function(c){Droppables.remove(c)
});
b.draggables.invoke("destroy");
delete Sortable.sortables[b.element.id]
}},create:function(c){c=$(c);
var b=Object.extend({element:c,tag:"li",dropOnEmpty:false,tree:false,treeTag:"ul",overlap:"vertical",constraint:"vertical",containment:c,handle:false,only:false,delay:0,hoverclass:null,ghosting:false,quiet:false,scroll:false,scrollSensitivity:20,scrollSpeed:15,format:this.SERIALIZE_RULE,elements:false,handles:false,onChange:Prototype.emptyFunction,onUpdate:Prototype.emptyFunction},arguments[1]||{});
this.destroy(c);
var a={revert:true,quiet:b.quiet,scroll:b.scroll,scrollSpeed:b.scrollSpeed,scrollSensitivity:b.scrollSensitivity,delay:b.delay,ghosting:b.ghosting,constraint:b.constraint,handle:b.handle};
if(b.starteffect){a.starteffect=b.starteffect
}if(b.reverteffect){a.reverteffect=b.reverteffect
}else{if(b.ghosting){a.reverteffect=function(f){f.style.top=0;
f.style.left=0
}
}}if(b.endeffect){a.endeffect=b.endeffect
}if(b.zindex){a.zindex=b.zindex
}var d={overlap:b.overlap,containment:b.containment,tree:b.tree,hoverclass:b.hoverclass,onHover:Sortable.onHover};
var e={onHover:Sortable.onEmptyHover,overlap:b.overlap,containment:b.containment,hoverclass:b.hoverclass};
Element.cleanWhitespace(c);
b.draggables=[];
b.droppables=[];
if(b.dropOnEmpty||b.tree){Droppables.add(c,e);
b.droppables.push(c)
}(b.elements||this.findElements(c,b)||[]).each(function(h,f){var g=b.handles?$(b.handles[f]):(b.handle?$(h).select("."+b.handle)[0]:h);
b.draggables.push(new Draggable(h,Object.extend(a,{handle:g})));
Droppables.add(h,d);
if(b.tree){h.treeNode=c
}b.droppables.push(h)
});
if(b.tree){(Sortable.findTreeElements(c,b)||[]).each(function(f){Droppables.add(f,e);
f.treeNode=c;
b.droppables.push(f)
})
}this.sortables[c.identify()]=b;
Draggables.addObserver(new SortableObserver(c,b.onUpdate))
},findElements:function(b,a){return Element.findChildren(b,a.only,a.tree?true:false,a.tag)
},findTreeElements:function(b,a){return Element.findChildren(b,a.only,a.tree?true:false,a.treeTag)
},onHover:function(e,d,a){if(Element.isParent(d,e)){return
}if(a>0.33&&a<0.66&&Sortable.options(d).tree){return
}else{if(a>0.5){Sortable.mark(d,"before");
if(d.previousSibling!=e){var b=e.parentNode;
e.style.visibility="hidden";
d.parentNode.insertBefore(e,d);
if(d.parentNode!=b){Sortable.options(b).onChange(e)
}Sortable.options(d.parentNode).onChange(e)
}}else{Sortable.mark(d,"after");
var c=d.nextSibling||null;
if(c!=e){var b=e.parentNode;
e.style.visibility="hidden";
d.parentNode.insertBefore(e,c);
if(d.parentNode!=b){Sortable.options(b).onChange(e)
}Sortable.options(d.parentNode).onChange(e)
}}}},onEmptyHover:function(e,g,h){var j=e.parentNode;
var a=Sortable.options(g);
if(!Element.isParent(g,e)){var f;
var c=Sortable.findElements(g,{tag:a.tag,only:a.only});
var b=null;
if(c){var d=Element.offsetSize(g,a.overlap)*(1-h);
for(f=0;
f<c.length;
f+=1){if(d-Element.offsetSize(c[f],a.overlap)>=0){d-=Element.offsetSize(c[f],a.overlap)
}else{if(d-(Element.offsetSize(c[f],a.overlap)/2)>=0){b=f+1<c.length?c[f+1]:null;
break
}else{b=c[f];
break
}}}}g.insertBefore(e,b);
Sortable.options(j).onChange(e);
a.onChange(e)
}},unmark:function(){if(Sortable._marker){Sortable._marker.hide()
}},mark:function(b,a){var d=Sortable.options(b.parentNode);
if(d&&!d.ghosting){return
}if(!Sortable._marker){Sortable._marker=($("dropmarker")||Element.extend(document.createElement("DIV"))).hide().addClassName("dropmarker").setStyle({position:"absolute"});
document.getElementsByTagName("body").item(0).appendChild(Sortable._marker)
}var c=b.cumulativeOffset();
Sortable._marker.setStyle({left:c[0]+"px",top:c[1]+"px"});
if(a=="after"){if(d.overlap=="horizontal"){Sortable._marker.setStyle({left:(c[0]+b.clientWidth)+"px"})
}else{Sortable._marker.setStyle({top:(c[1]+b.clientHeight)+"px"})
}}Sortable._marker.show()
},_tree:function(e,b,f){var d=Sortable.findElements(e,b)||[];
for(var c=0;
c<d.length;
++c){var a=d[c].id.match(b.format);
if(!a){continue
}var g={id:encodeURIComponent(a?a[1]:null),element:e,parent:f,children:[],position:f.children.length,container:$(d[c]).down(b.treeTag)};
if(g.container){this._tree(g.container,b,g)
}f.children.push(g)
}return f
},tree:function(d){d=$(d);
var c=this.options(d);
var b=Object.extend({tag:c.tag,treeTag:c.treeTag,only:c.only,name:d.id,format:c.format},arguments[1]||{});
var a={id:null,parent:null,children:[],container:d,position:0};
return Sortable._tree(d,b,a)
},_constructIndex:function(b){var a="";
do{if(b.id){a="["+b.position+"]"+a
}}while((b=b.parent)!=null);
return a
},sequence:function(b){b=$(b);
var a=Object.extend(this.options(b),arguments[1]||{});
return $(this.findElements(b,a)||[]).map(function(c){return c.id.match(a.format)?c.id.match(a.format)[1]:""
})
},setSequence:function(b,c){b=$(b);
var a=Object.extend(this.options(b),arguments[2]||{});
var d={};
this.findElements(b,a).each(function(e){if(e.id.match(a.format)){d[e.id.match(a.format)[1]]=[e,e.parentNode]
}e.parentNode.removeChild(e)
});
c.each(function(e){var f=d[e];
if(f){f[1].appendChild(f[0]);
delete d[e]
}})
},serialize:function(c){c=$(c);
var b=Object.extend(Sortable.options(c),arguments[1]||{});
var a=encodeURIComponent((arguments[1]&&arguments[1].name)?arguments[1].name:c.id);
if(b.tree){return Sortable.tree(c,arguments[1]).children.map(function(d){return[a+Sortable._constructIndex(d)+"[id]="+encodeURIComponent(d.id)].concat(d.children.map(arguments.callee))
}).flatten().join("&")
}else{return Sortable.sequence(c,arguments[1]).map(function(d){return a+"[]="+encodeURIComponent(d)
}).join("&")
}}};
Element.isParent=function(b,a){if(!b.parentNode||b==a){return false
}if(b.parentNode==a){return true
}return Element.isParent(b.parentNode,a)
};
Element.findChildren=function(d,b,a,c){if(!d.hasChildNodes()){return null
}c=c.toUpperCase();
if(b){b=[b].flatten()
}var e=[];
$A(d.childNodes).each(function(g){if(g.tagName&&g.tagName.toUpperCase()==c&&(!b||(Element.classNames(g).detect(function(h){return b.include(h)
})))){e.push(g)
}if(a){var f=Element.findChildren(g,b,a,c);
if(f){e.push(f)
}}});
return(e.length>0?e.flatten():[])
};
Element.offsetSize=function(a,b){return a["offset"+((b=="vertical"||b=="height")?"Height":"Width")]
};