(function($){$.jScrollPane={active:[]};$.fn.jScrollPane=function(settings){settings=$.extend({},$.fn.jScrollPane.defaults,settings);var rf=function(){return false};return this.each(function(){var $this=$(this);$this.css("overflow","hidden");var paneEle=this;if($(this).parent().is(".jScrollPaneContainer")){var currentScrollPosition=settings.maintainPosition?$this.position().top:0;var $c=$(this).parent();var paneWidth=$c.innerWidth();var paneHeight=$c.outerHeight();var trackHeight=paneHeight;$(">.jScrollPaneTrack, >.jScrollArrowUp, >.jScrollArrowDown",$c).remove();$this.css({"top":0})}else{var currentScrollPosition=0;this.originalPadding=$this.css("paddingTop")+" "+$this.css("paddingRight")+" "+$this.css("paddingBottom")+" "+$this.css("paddingLeft");this.originalSidePaddingTotal=(parseInt($this.css("paddingLeft"))||0)+(parseInt($this.css("paddingRight"))||0);var paneWidth=$this.innerWidth();var paneHeight=$this.innerHeight();var trackHeight=paneHeight;$this.wrap($("<div></div>").attr({"className":"jScrollPaneContainer"}).css({"height":paneHeight+"px","width":paneWidth+"px"}).attr("tabindex",settings.tabIndex));$(document).bind("emchange",function(e,cur,prev){$this.jScrollPane(settings)})}if(settings.reinitialiseOnImageLoad){var $imagesToLoad=$.data(paneEle,"jScrollPaneImagesToLoad")||$("img",$this);var loadedImages=[];if($imagesToLoad.length){$imagesToLoad.each(function(i,val){$(this).bind("load readystatechange",function(){if($.inArray(i,loadedImages)==-1){loadedImages.push(val);$imagesToLoad=$.grep($imagesToLoad,function(n,i){return n!=val});$.data(paneEle,"jScrollPaneImagesToLoad",$imagesToLoad);var s2=$.extend(settings,{reinitialiseOnImageLoad:false});$this.jScrollPane(s2)}}).each(function(i,val){if(this.complete||this.complete===undefined){this.src=this.src}})})}}var p=this.originalSidePaddingTotal;var realPaneWidth=paneWidth-settings.scrollbarWidth-settings.scrollbarMargin-p;var cssToApply={"height":"auto","width":realPaneWidth+"px"};if(settings.scrollbarOnLeft){cssToApply.paddingLeft=settings.scrollbarMargin+settings.scrollbarWidth+"px"}else{cssToApply.paddingRight=settings.scrollbarMargin+"px"}$this.css(cssToApply);var contentHeight=$this.outerHeight();var percentInView=paneHeight/contentHeight;if(percentInView<0.99){var $container=$this.parent();$container.append($("<div></div>").attr({"className":"jScrollPaneTrack"}).css({"width":settings.scrollbarWidth+"px"}).append($("<div></div>").attr({"className":"jScrollPaneDrag"}).css({"width":settings.scrollbarWidth+"px"}).append($("<div></div>").attr({"className":"jScrollPaneDragTop"}).css({"width":settings.scrollbarWidth+"px"}),$("<div></div>").attr({"className":"jScrollPaneDragBottom"}).css({"width":settings.scrollbarWidth+"px"}))));var $track=$(">.jScrollPaneTrack",$container);var $drag=$(">.jScrollPaneTrack .jScrollPaneDrag",$container);var currentArrowDirection;var currentArrowTimerArr=[];var currentArrowInc;var whileArrowButtonDown=function(){if(currentArrowInc>4||currentArrowInc%4==0){positionDrag(dragPosition+currentArrowDirection*mouseWheelMultiplier)}currentArrowInc++};if(settings.enableKeyboardNavigation){$container.bind("keydown.jscrollpane",function(e){switch(e.keyCode){case 38:currentArrowDirection=-1;currentArrowInc=0;whileArrowButtonDown();currentArrowTimerArr[currentArrowTimerArr.length]=setInterval(whileArrowButtonDown,100);return false;case 40:currentArrowDirection=1;currentArrowInc=0;whileArrowButtonDown();currentArrowTimerArr[currentArrowTimerArr.length]=setInterval(whileArrowButtonDown,100);return false;case 33:case 34:return false;default:}}).bind("keyup.jscrollpane",function(e){if(e.keyCode==38||e.keyCode==40){for(var i=0;i<currentArrowTimerArr.length;i++){clearInterval(currentArrowTimerArr[i])}return false}})}if(settings.showArrows){var currentArrowButton;var currentArrowInterval;var onArrowMouseUp=function(event){$("html").unbind("mouseup",onArrowMouseUp);currentArrowButton.removeClass("jScrollActiveArrowButton");clearInterval(currentArrowInterval)};var onArrowMouseDown=function(){$("html").bind("mouseup",onArrowMouseUp);currentArrowButton.addClass("jScrollActiveArrowButton");currentArrowInc=0;whileArrowButtonDown();currentArrowInterval=setInterval(whileArrowButtonDown,100)};$container.append($("<a></a>").attr({"href":"javascript:;","className":"jScrollArrowUp","tabindex":-1}).css({"width":settings.scrollbarWidth+"px"}).html("Scroll up").bind("mousedown",function(){currentArrowButton=$(this);currentArrowDirection=-1;onArrowMouseDown();this.blur();return false}).bind("click",rf),$("<a></a>").attr({"href":"javascript:;","className":"jScrollArrowDown","tabindex":-1}).css({"width":settings.scrollbarWidth+"px"}).html("Scroll down").bind("mousedown",function(){currentArrowButton=$(this);currentArrowDirection=1;onArrowMouseDown();this.blur();return false}).bind("click",rf));var $upArrow=$(">.jScrollArrowUp",$container);var $downArrow=$(">.jScrollArrowDown",$container);if(settings.arrowSize){trackHeight=paneHeight-settings.arrowSize-settings.arrowSize;$track.css({"height":trackHeight+"px",top:settings.arrowSize+"px"})}else{var topArrowHeight=$upArrow.height();settings.arrowSize=topArrowHeight;trackHeight=paneHeight-topArrowHeight-$downArrow.height();$track.css({"height":trackHeight+"px",top:topArrowHeight+"px"})}}var $pane=$(this).css({"position":"absolute","overflow":"visible"});var currentOffset;var maxY;var mouseWheelMultiplier;var dragPosition=0;var dragMiddle=percentInView*paneHeight/2;var getPos=function(event,c){var p=c=="X"?"Left":"Top";return event["page"+c]||(event["client"+c]+(document.documentElement["scroll"+p]||document.body["scroll"+p]))||0};var ignoreNativeDrag=function(){return false};var initDrag=function(){ceaseAnimation();currentOffset=$drag.offset(false);currentOffset.top-=dragPosition;maxY=trackHeight-$drag[0].offsetHeight;mouseWheelMultiplier=2*settings.wheelSpeed*maxY/contentHeight};var onStartDrag=function(event){initDrag();dragMiddle=getPos(event,"Y")-dragPosition-currentOffset.top;$("html").bind("mouseup",onStopDrag).bind("mousemove",updateScroll);if($.browser.msie){$("html").bind("dragstart",ignoreNativeDrag).bind("selectstart",ignoreNativeDrag)}return false};var onStopDrag=function(){$("html").unbind("mouseup",onStopDrag).unbind("mousemove",updateScroll);dragMiddle=percentInView*paneHeight/2;if($.browser.msie){$("html").unbind("dragstart",ignoreNativeDrag).unbind("selectstart",ignoreNativeDrag)}};var positionDrag=function(destY){destY=destY<0?0:(destY>maxY?maxY:destY);dragPosition=destY;$drag.css({"top":destY+"px"});var p=destY/maxY;$this.data("jScrollPanePosition",(paneHeight-contentHeight)*-p);$pane.css({"top":((paneHeight-contentHeight)*p)+"px"});$this.trigger("scroll");if(settings.showArrows){$upArrow[destY==0?"addClass":"removeClass"]("disabled");$downArrow[destY==maxY?"addClass":"removeClass"]("disabled")}};var updateScroll=function(e){positionDrag(getPos(e,"Y")-currentOffset.top-dragMiddle)};var dragH=Math.max(Math.min(percentInView*(paneHeight-settings.arrowSize*2),settings.dragMaxHeight),settings.dragMinHeight);$drag.css({"height":dragH+"px"}).bind("mousedown",onStartDrag);var trackScrollInterval;var trackScrollInc;var trackScrollMousePos;var doTrackScroll=function(){if(trackScrollInc>8||trackScrollInc%4==0){positionDrag((dragPosition-((dragPosition-trackScrollMousePos)/2)))}trackScrollInc++};var onStopTrackClick=function(){clearInterval(trackScrollInterval);$("html").unbind("mouseup",onStopTrackClick).unbind("mousemove",onTrackMouseMove)};var onTrackMouseMove=function(event){trackScrollMousePos=getPos(event,"Y")-currentOffset.top-dragMiddle};var onTrackClick=function(event){initDrag();onTrackMouseMove(event);trackScrollInc=0;$("html").bind("mouseup",onStopTrackClick).bind("mousemove",onTrackMouseMove);trackScrollInterval=setInterval(doTrackScroll,100);doTrackScroll();return false};$track.bind("mousedown",onTrackClick);$container.bind("mousewheel",function(event,delta){delta=delta||(event.wheelDelta?event.wheelDelta/120:(event.detail)?-event.detail/3:0);initDrag();ceaseAnimation();var d=dragPosition;positionDrag(dragPosition-delta*mouseWheelMultiplier);var dragOccured=d!=dragPosition;return !dragOccured});var _animateToPosition;var _animateToInterval;function animateToPosition(){var diff=(_animateToPosition-dragPosition)/settings.animateStep;if(diff>1||diff<-1){positionDrag(dragPosition+diff)}else{positionDrag(_animateToPosition);ceaseAnimation()}}var ceaseAnimation=function(){if(_animateToInterval){clearInterval(_animateToInterval);delete _animateToPosition}};var scrollTo=function(pos,preventAni){if(typeof pos=="string"){$e=$(pos,$this);if(!$e.length){return}pos=$e.offset().top-$this.offset().top}$container.scrollTop(0);ceaseAnimation();var maxScroll=contentHeight-paneHeight;pos=pos>maxScroll?maxScroll:pos;$this.data("jScrollPaneMaxScroll",maxScroll);var destDragPosition=pos/maxScroll*maxY;if(preventAni||!settings.animateTo){positionDrag(destDragPosition)}else{_animateToPosition=destDragPosition;_animateToInterval=setInterval(animateToPosition,settings.animateInterval)}};$this[0].scrollTo=scrollTo;$this[0].scrollBy=function(delta){var currentPos=-parseInt($pane.css("top"))||0;scrollTo(currentPos+delta)};initDrag();scrollTo(-currentScrollPosition,true);$("*",this).bind("focus",function(event){var $e=$(this);var eleTop=0;while($e[0]!=$this[0]){eleTop+=$e.position().top;$e=$e.offsetParent()}var viewportTop=-parseInt($pane.css("top"))||0;var maxVisibleEleTop=viewportTop+paneHeight;var eleInView=eleTop>viewportTop&&eleTop<maxVisibleEleTop;if(!eleInView){var destPos=eleTop-settings.scrollbarMargin;if(eleTop>viewportTop){destPos+=$(this).height()+15+settings.scrollbarMargin-paneHeight}scrollTo(destPos)}});if(location.hash){setTimeout(function(){scrollTo(location.hash)},$.browser.safari?100:0)}$(document).bind("click",function(e){$target=$(e.target);if($target.is("a")){var h=$target.attr("href");if(h&&h.substr(0,1)=="#"&&h.length>1){setTimeout(function(){scrollTo(h,!settings.animateToInternalLinks)},$.browser.safari?100:0)}}});function onSelectScrollMouseDown(e){$(document).bind("mousemove.jScrollPaneDragging",onTextSelectionScrollMouseMove);$(document).bind("mouseup.jScrollPaneDragging",onSelectScrollMouseUp)}var textDragDistanceAway;var textSelectionInterval;function onTextSelectionInterval(){direction=textDragDistanceAway<0?-1:1;$this[0].scrollBy(textDragDistanceAway/2)}function clearTextSelectionInterval(){if(textSelectionInterval){clearInterval(textSelectionInterval);textSelectionInterval=undefined}}function onTextSelectionScrollMouseMove(e){var offset=$this.parent().offset().top;var maxOffset=offset+paneHeight;var mouseOffset=getPos(e,"Y");textDragDistanceAway=mouseOffset<offset?mouseOffset-offset:(mouseOffset>maxOffset?mouseOffset-maxOffset:0);if(textDragDistanceAway==0){clearTextSelectionInterval()}else{if(!textSelectionInterval){textSelectionInterval=setInterval(onTextSelectionInterval,100)}}}function onSelectScrollMouseUp(e){$(document).unbind("mousemove.jScrollPaneDragging").unbind("mouseup.jScrollPaneDragging");clearTextSelectionInterval()}$container.bind("mousedown.jScrollPane",onSelectScrollMouseDown);$.jScrollPane.active.push($this[0])}else{$this.css({"height":paneHeight+"px","width":paneWidth-this.originalSidePaddingTotal+"px","padding":this.originalPadding});$this[0].scrollTo=$this[0].scrollBy=function(){};$this.parent().unbind("mousewheel").unbind("mousedown.jScrollPane").unbind("keydown.jscrollpane").unbind("keyup.jscrollpane")}})};$.fn.jScrollPaneRemove=function(){$(this).each(function(){$this=$(this);var $c=$this.parent();if($c.is(".jScrollPaneContainer")){$this.css({"top":"","height":"","width":"","padding":"","overflow":"","position":""});$c.after($this).remove()}})};$.fn.jScrollPane.defaults={scrollbarWidth:10,scrollbarMargin:5,wheelSpeed:18,showArrows:false,arrowSize:0,animateTo:false,dragMinHeight:1,dragMaxHeight:99999,animateInterval:100,animateStep:3,maintainPosition:true,scrollbarOnLeft:false,reinitialiseOnImageLoad:false,tabIndex:0,enableKeyboardNavigation:true,animateToInternalLinks:false};$(window).bind("unload",function(){var els=$.jScrollPane.active;for(var i=0;i<els.length;i++){els[i].scrollTo=els[i].scrollBy=null}})})(jQuery);