//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2008 Valerio Proietti, <http://mad4milk.net>, MIT Style License.

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));
}});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);}});var Slider=new Class({Implements:[Events,Options],options:{onTick:function(A){if(this.options.snap){A=this.toPosition(this.step);
}this.knob.setStyle(this.property,A);},snap:false,offset:0,range:false,wheel:false,steps:100,mode:"horizontal"},initialize:function(E,A,D){this.setOptions(D);
this.element=$(E);this.knob=$(A);this.previousChange=this.previousEnd=this.step=-1;this.element.addEvent("mousedown",this.clickedElement.bind(this));if(this.options.wheel){this.element.addEvent("mousewheel",this.scrolledElement.bindWithEvent(this));
}var F,B={},C={x:false,y:false};switch(this.options.mode){case"vertical":this.axis="y";this.property="top";F="offsetHeight";break;case"horizontal":this.axis="x";
this.property="left";F="offsetWidth";}this.half=this.knob[F]/2;this.full=this.element[F]-this.knob[F]+(this.options.offset*2);this.min=$chk(this.options.range[0])?this.options.range[0]:0;
this.max=$chk(this.options.range[1])?this.options.range[1]:this.options.steps;this.range=this.max-this.min;this.steps=this.options.steps||this.full;this.stepSize=Math.abs(this.range)/this.steps;
this.stepWidth=this.stepSize*this.full/Math.abs(this.range);this.knob.setStyle("position","relative").setStyle(this.property,-this.options.offset);C[this.axis]=this.property;
B[this.axis]=[-this.options.offset,this.full-this.options.offset];this.drag=new Drag(this.knob,{snap:0,limit:B,modifiers:C,onDrag:this.draggedKnob.bind(this),onStart:this.draggedKnob.bind(this),onComplete:function(){this.draggedKnob();
this.end();}.bind(this)});if(this.options.snap){this.drag.options.grid=Math.ceil(this.stepWidth);this.drag.options.limit[this.axis][1]=this.full;}},set:function(A){if(!((this.range>0)^(A<this.min))){A=this.min;
}if(!((this.range>0)^(A>this.max))){A=this.max;}this.step=Math.round(A);this.checkStep();this.end();this.fireEvent("tick",this.toPosition(this.step));return this;
},clickedElement:function(C){var B=this.range<0?-1:1;var A=C.page[this.axis]-this.element.getPosition()[this.axis]-this.half;A=A.limit(-this.options.offset,this.full-this.options.offset);
this.step=Math.round(this.min+B*this.toStep(A));this.checkStep();this.end();this.fireEvent("tick",A);},scrolledElement:function(A){var B=(this.options.mode=="horizontal")?(A.wheel<0):(A.wheel>0);
this.set(B?this.step-this.stepSize:this.step+this.stepSize);A.stop();},draggedKnob:function(){var B=this.range<0?-1:1;var A=this.drag.value.now[this.axis];
A=A.limit(-this.options.offset,this.full-this.options.offset);this.step=Math.round(this.min+B*this.toStep(A));this.checkStep();},checkStep:function(){if(this.previousChange!=this.step){this.previousChange=this.step;
this.fireEvent("change",this.step);}},end:function(){if(this.previousEnd!==this.step){this.previousEnd=this.step;this.fireEvent("complete",this.step+"");
}},toStep:function(A){var B=(A+this.options.offset)*this.stepSize/this.full*this.steps;return this.options.steps?Math.round(B-=B%this.stepSize):B;},toPosition:function(A){return(this.full*Math.abs(this.min-A))/(this.steps*this.stepSize)-this.options.offset;
}});