(function(){Element.implement({scrollTo:function(x,y){if(isBody(this)){this.getWindow().scrollTo(x,y);}else{this.scrollLeft=x;this.scrollTop=y;}
return this;},getSize:function(){if(isBody(this))return this.getWindow().getSize();return{x:this.offsetWidth,y:this.offsetHeight};},getScrollSize:function(){if(isBody(this))return this.getWindow().getScrollSize();return{x:this.scrollWidth,y:this.scrollHeight};},getScroll:function(){if(isBody(this))return this.getWindow().getScroll();return{x:this.scrollLeft,y:this.scrollTop};},getScrolls:function(){var element=this,position={x:0,y:0};while(element&&!isBody(element)){position.x+=element.scrollLeft;position.y+=element.scrollTop;element=element.parentNode;}
return position;},getOffsetParent:function(){var element=this;if(isBody(element))return null;if(!Browser.Engine.trident)return element.offsetParent;while((element=element.parentNode)&&!isBody(element)){if(styleString(element,'position')!='static')return element;}
return null;},getOffsets:function(){var element=this,position={x:0,y:0};if(isBody(this))return position;while(element&&!isBody(element)){position.x+=element.offsetLeft;position.y+=element.offsetTop;if(Browser.Engine.gecko){if(!borderBox(element)){position.x+=leftBorder(element);position.y+=topBorder(element);}
var parent=element.parentNode;if(parent&&styleString(parent,'overflow')!='visible'){position.x+=leftBorder(parent);position.y+=topBorder(parent);}}else if(element!=this&&(Browser.Engine.trident||Browser.Engine.webkit)){position.x+=leftBorder(element);position.y+=topBorder(element);}
element=element.offsetParent;if(Browser.Engine.trident){while(element&&!element.currentStyle.hasLayout)element=element.offsetParent;}}
if(Browser.Engine.gecko&&!borderBox(this)){position.x-=leftBorder(this);position.y-=topBorder(this);}
return position;},getPosition:function(relative){if(isBody(this))return{x:0,y:0};var offset=this.getOffsets(),scroll=this.getScrolls();var position={x:offset.x-scroll.x,y:offset.y-scroll.y};var relativePosition=(relative&&(relative=$(relative)))?relative.getPosition():{x:0,y:0};return{x:position.x-relativePosition.x,y:position.y-relativePosition.y};},getCoordinates:function(element){if(isBody(this))return this.getWindow().getCoordinates();var position=this.getPosition(element),size=this.getSize();var obj={left:position.x,top:position.y,width:size.x,height:size.y};obj.right=obj.left+obj.width;obj.bottom=obj.top+obj.height;return obj;},computePosition:function(obj){return{left:obj.x-styleNumber(this,'margin-left'),top:obj.y-styleNumber(this,'margin-top')};},position:function(obj){return this.setStyles(this.computePosition(obj));}});Native.implement([Document,Window],{getSize:function(){var win=this.getWindow();if(Browser.Engine.presto||Browser.Engine.webkit)return{x:win.innerWidth,y:win.innerHeight};var doc=getCompatElement(this);return{x:doc.clientWidth,y:doc.clientHeight};},getScroll:function(){var win=this.getWindow();var doc=getCompatElement(this);return{x:win.pageXOffset||doc.scrollLeft,y:win.pageYOffset||doc.scrollTop};},getScrollSize:function(){var doc=getCompatElement(this);var min=this.getSize();return{x:Math.max(doc.scrollWidth,min.x),y:Math.max(doc.scrollHeight,min.y)};},getPosition:function(){return{x:0,y:0};},getCoordinates:function(){var size=this.getSize();return{top:0,left:0,bottom:size.y,right:size.x,height:size.y,width:size.x};}});var styleString=Element.getComputedStyle;function styleNumber(element,style){return styleString(element,style).toInt()||0;};function borderBox(element){return styleString(element,'-moz-box-sizing')=='border-box';};function topBorder(element){return styleNumber(element,'border-top-width');};function leftBorder(element){return styleNumber(element,'border-left-width');};function isBody(element){return(/^(?:body|html)$/i).test(element.tagName);};function getCompatElement(element){var doc=element.getDocument();return(!doc.compatMode||doc.compatMode=='CSS1Compat')?doc.html:doc.body;};})();Native.implement([Window,Document,Element],{getHeight:function(){return this.getSize().y;},getWidth:function(){return this.getSize().x;},getScrollTop:function(){return this.getScroll().y;},getScrollLeft:function(){return this.getScroll().x;},getScrollHeight:function(){return this.getScrollSize().y;},getScrollWidth:function(){return this.getScrollSize().x;},getTop:function(){return this.getPosition().y;},getLeft:function(){return this.getPosition().x;}});