/**
 * Isotope v1.5.19
 * An exquisite jQuery plugin for magical layouts
 * http://isotope.metafizzy.co
 *
 * Commercial use requires one-time license fee
 * http://metafizzy.co/#licenses
 *
 * Copyright 2012 David DeSandro / Metafizzy
 */
(function(a,b,c){"use strict";var d=a.document,e=a.Modernizr,f=function(a){return a.charAt(0).toUpperCase()+a.slice(1)},g="Moz Webkit O Ms".split(" "),h=function(a){var b=d.documentElement.style,c;if(typeof b[a]=="string")return a;a=f(a);for(var e=0,h=g.length;e<h;e++){c=g[e]+a;if(typeof b[c]=="string")return c}},i=h("transform"),j=h("transitionProperty"),k={csstransforms:function(){return!!i},csstransforms3d:function(){var a=!!h("perspective");if(a){var c=" -o- -moz- -ms- -webkit- -khtml- ".split(" "),d="@media ("+c.join("transform-3d),(")+"modernizr)",e=b("<style>"+d+"{#modernizr{height:3px}}"+"</style>").appendTo("head"),f=b('<div id="modernizr" />').appendTo("html");a=f.height()===3,f.remove(),e.remove()}return a},csstransitions:function(){return!!j}},l;if(e)for(l in k)e.hasOwnProperty(l)||e.addTest(l,k[l]);else{e=a.Modernizr={_version:"1.6ish: miniModernizr for Isotope"};var m=" ",n;for(l in k)n=k[l](),e[l]=n,m+=" "+(n?"":"no-")+l;b("html").addClass(m)}if(e.csstransforms){var o=e.csstransforms3d?{translate:function(a){return"translate3d("+a[0]+"px, "+a[1]+"px, 0) "},scale:function(a){return"scale3d("+a+", "+a+", 1) "}}:{translate:function(a){return"translate("+a[0]+"px, "+a[1]+"px) "},scale:function(a){return"scale("+a+") "}},p=function(a,c,d){var e=b.data(a,"isoTransform")||{},f={},g,h={},j;f[c]=d,b.extend(e,f);for(g in e)j=e[g],h[g]=o[g](j);var k=h.translate||"",l=h.scale||"",m=k+l;b.data(a,"isoTransform",e),a.style[i]=m};b.cssNumber.scale=!0,b.cssHooks.scale={set:function(a,b){p(a,"scale",b)},get:function(a,c){var d=b.data(a,"isoTransform");return d&&d.scale?d.scale:1}},b.fx.step.scale=function(a){b.cssHooks.scale.set(a.elem,a.now+a.unit)},b.cssNumber.translate=!0,b.cssHooks.translate={set:function(a,b){p(a,"translate",b)},get:function(a,c){var d=b.data(a,"isoTransform");return d&&d.translate?d.translate:[0,0]}}}var q,r;e.csstransitions&&(q={WebkitTransitionProperty:"webkitTransitionEnd",MozTransitionProperty:"transitionend",OTransitionProperty:"oTransitionEnd",transitionProperty:"transitionEnd"}[j],r=h("transitionDuration"));var s=b.event,t;s.special.smartresize={setup:function(){b(this).bind("resize",s.special.smartresize.handler)},teardown:function(){b(this).unbind("resize",s.special.smartresize.handler)},handler:function(a,b){var c=this,d=arguments;a.type="smartresize",t&&clearTimeout(t),t=setTimeout(function(){jQuery.event.handle.apply(c,d)},b==="execAsap"?0:100)}},b.fn.smartresize=function(a){return a?this.bind("smartresize",a):this.trigger("smartresize",["execAsap"])},b.Isotope=function(a,c,d){this.element=b(c),this._create(a),this._init(d)};var u=["width","height"],v=b(a);b.Isotope.settings={resizable:!0,layoutMode:"masonry",containerClass:"isotope",itemClass:"isotope-item",hiddenClass:"isotope-hidden",hiddenStyle:{opacity:0,scale:.001},visibleStyle:{opacity:1,scale:1},containerStyle:{position:"relative",overflow:"hidden"},animationEngine:"best-available",animationOptions:{queue:!1,duration:800},sortBy:"original-order",sortAscending:!0,resizesContainer:!0,transformsEnabled:!b.browser.opera,itemPositionDataEnabled:!1},b.Isotope.prototype={_create:function(a){this.options=b.extend({},b.Isotope.settings,a),this.styleQueue=[],this.elemCount=0;var c=this.element[0].style;this.originalStyle={};var d=u.slice(0);for(var e in this.options.containerStyle)d.push(e);for(var f=0,g=d.length;f<g;f++)e=d[f],this.originalStyle[e]=c[e]||"";this.element.css(this.options.containerStyle),this._updateAnimationEngine(),this._updateUsingTransforms();var h={"original-order":function(a,b){return b.elemCount++,b.elemCount},random:function(){return Math.random()}};this.options.getSortData=b.extend(this.options.getSortData,h),this.reloadItems(),this.offset={left:parseInt(this.element.css("padding-left")||0,10),top:parseInt(this.element.css("padding-top")||0,10)};var i=this;setTimeout(function(){i.element.addClass(i.options.containerClass)},0),this.options.resizable&&v.bind("smartresize.isotope",function(){i.resize()}),this.element.delegate("."+this.options.hiddenClass,"click",function(){return!1})},_getAtoms:function(a){var b=this.options.itemSelector,c=b?a.filter(b).add(a.find(b)):a,d={position:"absolute"};return this.usingTransforms&&(d.left=0,d.top=0),c.css(d).addClass(this.options.itemClass),this.updateSortData(c,!0),c},_init:function(a){this.$filteredAtoms=this._filter(this.$allAtoms),this._sort(),this.reLayout(a)},option:function(a){if(b.isPlainObject(a)){this.options=b.extend(!0,this.options,a);var c;for(var d in a)c="_update"+f(d),this[c]&&this[c]()}},_updateAnimationEngine:function(){var a=this.options.animationEngine.toLowerCase().replace(/[ _\-]/g,""),b;switch(a){case"css":case"none":b=!1;break;case"jquery":b=!0;break;default:b=!e.csstransitions}this.isUsingJQueryAnimation=b,this._updateUsingTransforms()},_updateTransformsEnabled:function(){this._updateUsingTransforms()},_updateUsingTransforms:function(){var a=this.usingTransforms=this.options.transformsEnabled&&e.csstransforms&&e.csstransitions&&!this.isUsingJQueryAnimation;a||(delete this.options.hiddenStyle.scale,delete this.options.visibleStyle.scale),this.getPositionStyles=a?this._translate:this._positionAbs},_filter:function(a){var b=this.options.filter===""?"*":this.options.filter;if(!b)return a;var c=this.options.hiddenClass,d="."+c,e=a.filter(d),f=e;if(b!=="*"){f=e.filter(b);var g=a.not(d).not(b).addClass(c);this.styleQueue.push({$el:g,style:this.options.hiddenStyle})}return this.styleQueue.push({$el:f,style:this.options.visibleStyle}),f.removeClass(c),a.filter(b)},updateSortData:function(a,c){var d=this,e=this.options.getSortData,f,g;a.each(function(){f=b(this),g={};for(var a in e)!c&&a==="original-order"?g[a]=b.data(this,"isotope-sort-data")[a]:g[a]=e[a](f,d);b.data(this,"isotope-sort-data",g)})},_sort:function(){var a=this.options.sortBy,b=this._getSorter,c=this.options.sortAscending?1:-1,d=function(d,e){var f=b(d,a),g=b(e,a);return f===g&&a!=="original-order"&&(f=b(d,"original-order"),g=b(e,"original-order")),(f>g?1:f<g?-1:0)*c};this.$filteredAtoms.sort(d)},_getSorter:function(a,c){return b.data(a,"isotope-sort-data")[c]},_translate:function(a,b){return{translate:[a,b]}},_positionAbs:function(a,b){return{left:a,top:b}},_pushPosition:function(a,b,c){b=Math.round(b+this.offset.left),c=Math.round(c+this.offset.top);var d=this.getPositionStyles(b,c);this.styleQueue.push({$el:a,style:d}),this.options.itemPositionDataEnabled&&a.data("isotope-item-position",{x:b,y:c})},layout:function(a,b){var c=this.options.layoutMode;this["_"+c+"Layout"](a);if(this.options.resizesContainer){var d=this["_"+c+"GetContainerSize"]();this.styleQueue.push({$el:this.element,style:d})}this._processStyleQueue(a,b),this.isLaidOut=!0},_processStyleQueue:function(a,c){var d=this.isLaidOut?this.isUsingJQueryAnimation?"animate":"css":"css",f=this.options.animationOptions,g=this.options.onLayout,h,i,j,k;i=function(a,b){b.$el[d](b.style,f)};if(this._isInserting&&this.isUsingJQueryAnimation)i=function(a,b){h=b.$el.hasClass("no-transition")?"css":d,b.$el[h](b.style,f)};else if(c||g||f.complete){var l=!1,m=[c,g,f.complete],n=this;j=!0,k=function(){if(l)return;var b;for(var c=0,d=m.length;c<d;c++)b=m[c],typeof b=="function"&&b.call(n.element,a,n);l=!0};if(this.isUsingJQueryAnimation&&d==="animate")f.complete=k,j=!1;else if(e.csstransitions){var o=0,p=this.styleQueue[0],s=p&&p.$el,t;while(!s||!s.length){t=this.styleQueue[o++];if(!t)return;s=t.$el}var u=parseFloat(getComputedStyle(s[0])[r]);u>0&&(i=function(a,b){b.$el[d](b.style,f).one(q,k)},j=!1)}}b.each(this.styleQueue,i),j&&k(),this.styleQueue=[]},resize:function(){this["_"+this.options.layoutMode+"ResizeChanged"]()&&this.reLayout()},reLayout:function(a){this["_"+this.options.layoutMode+"Reset"](),this.layout(this.$filteredAtoms,a)},addItems:function(a,b){var c=this._getAtoms(a);this.$allAtoms=this.$allAtoms.add(c),b&&b(c)},insert:function(a,b){this.element.append(a);var c=this;this.addItems(a,function(a){var d=c._filter(a);c._addHideAppended(d),c._sort(),c.reLayout(),c._revealAppended(d,b)})},appended:function(a,b){var c=this;this.addItems(a,function(a){c._addHideAppended(a),c.layout(a),c._revealAppended(a,b)})},_addHideAppended:function(a){this.$filteredAtoms=this.$filteredAtoms.add(a),a.addClass("no-transition"),this._isInserting=!0,this.styleQueue.push({$el:a,style:this.options.hiddenStyle})},_revealAppended:function(a,b){var c=this;setTimeout(function(){a.removeClass("no-transition"),c.styleQueue.push({$el:a,style:c.options.visibleStyle}),c._isInserting=!1,c._processStyleQueue(a,b)},10)},reloadItems:function(){this.$allAtoms=this._getAtoms(this.element.children())},remove:function(a,b){var c=this,d=function(){c.$allAtoms=c.$allAtoms.not(a),a.remove(),b&&b.call(c.element)};a.filter(":not(."+this.options.hiddenClass+")").length?(this.styleQueue.push({$el:a,style:this.options.hiddenStyle}),this.$filteredAtoms=this.$filteredAtoms.not(a),this._sort(),this.reLayout(d)):d()},shuffle:function(a){this.updateSortData(this.$allAtoms),this.options.sortBy="random",this._sort(),this.reLayout(a)},destroy:function(){var a=this.usingTransforms,b=this.options;this.$allAtoms.removeClass(b.hiddenClass+" "+b.itemClass).each(function(){var b=this.style;b.position="",b.top="",b.left="",b.opacity="",a&&(b[i]="")});var c=this.element[0].style;for(var d in this.originalStyle)c[d]=this.originalStyle[d];this.element.unbind(".isotope").undelegate("."+b.hiddenClass,"click").removeClass(b.containerClass).removeData("isotope"),v.unbind(".isotope")},_getSegments:function(a){var b=this.options.layoutMode,c=a?"rowHeight":"columnWidth",d=a?"height":"width",e=a?"rows":"cols",g=this.element[d](),h,i=this.options[b]&&this.options[b][c]||this.$filteredAtoms["outer"+f(d)](!0)||g;h=Math.floor(g/i),h=Math.max(h,1),this[b][e]=h,this[b][c]=i},_checkIfSegmentsChanged:function(a){var b=this.options.layoutMode,c=a?"rows":"cols",d=this[b][c];return this._getSegments(a),this[b][c]!==d},_masonryReset:function(){this.masonry={},this._getSegments();var a=this.masonry.cols;this.masonry.colYs=[];while(a--)this.masonry.colYs.push(0)},_masonryLayout:function(a){var c=this,d=c.masonry;a.each(function(){var a=b(this),e=Math.ceil(a.outerWidth(!0)/d.columnWidth);e=Math.min(e,d.cols);if(e===1)c._masonryPlaceBrick(a,d.colYs);else{var f=d.cols+1-e,g=[],h,i;for(i=0;i<f;i++)h=d.colYs.slice(i,i+e),g[i]=Math.max.apply(Math,h);c._masonryPlaceBrick(a,g)}})},_masonryPlaceBrick:function(a,b){var c=Math.min.apply(Math,b),d=0;for(var e=0,f=b.length;e<f;e++)if(b[e]===c){d=e;break}var g=this.masonry.columnWidth*d,h=c;this._pushPosition(a,g,h);var i=c+a.outerHeight(!0),j=this.masonry.cols+1-f;for(e=0;e<j;e++)this.masonry.colYs[d+e]=i},_masonryGetContainerSize:function(){var a=Math.max.apply(Math,this.masonry.colYs);return{height:a}},_masonryResizeChanged:function(){return this._checkIfSegmentsChanged()},_fitRowsReset:function(){this.fitRows={x:0,y:0,height:0}},_fitRowsLayout:function(a){var c=this,d=this.element.width(),e=this.fitRows;a.each(function(){var a=b(this),f=a.outerWidth(!0),g=a.outerHeight(!0);e.x!==0&&f+e.x>d&&(e.x=0,e.y=e.height),c._pushPosition(a,e.x,e.y),e.height=Math.max(e.y+g,e.height),e.x+=f})},_fitRowsGetContainerSize:function(){return{height:this.fitRows.height}},_fitRowsResizeChanged:function(){return!0},_cellsByRowReset:function(){this.cellsByRow={index:0},this._getSegments(),this._getSegments(!0)},_cellsByRowLayout:function(a){var c=this,d=this.cellsByRow;a.each(function(){var a=b(this),e=d.index%d.cols,f=Math.floor(d.index/d.cols),g=(e+.5)*d.columnWidth-a.outerWidth(!0)/2,h=(f+.5)*d.rowHeight-a.outerHeight(!0)/2;c._pushPosition(a,g,h),d.index++})},_cellsByRowGetContainerSize:function(){return{height:Math.ceil(this.$filteredAtoms.length/this.cellsByRow.cols)*this.cellsByRow.rowHeight+this.offset.top}},_cellsByRowResizeChanged:function(){return this._checkIfSegmentsChanged()},_straightDownReset:function(){this.straightDown={y:0}},_straightDownLayout:function(a){var c=this;a.each(function(a){var d=b(this);c._pushPosition(d,0,c.straightDown.y),c.straightDown.y+=d.outerHeight(!0)})},_straightDownGetContainerSize:function(){return{height:this.straightDown.y}},_straightDownResizeChanged:function(){return!0},_masonryHorizontalReset:function(){this.masonryHorizontal={},this._getSegments(!0);var a=this.masonryHorizontal.rows;this.masonryHorizontal.rowXs=[];while(a--)this.masonryHorizontal.rowXs.push(0)},_masonryHorizontalLayout:function(a){var c=this,d=c.masonryHorizontal;a.each(function(){var a=b(this),e=Math.ceil(a.outerHeight(!0)/d.rowHeight);e=Math.min(e,d.rows);if(e===1)c._masonryHorizontalPlaceBrick(a,d.rowXs);else{var f=d.rows+1-e,g=[],h,i;for(i=0;i<f;i++)h=d.rowXs.slice(i,i+e),g[i]=Math.max.apply(Math,h);c._masonryHorizontalPlaceBrick(a,g)}})},_masonryHorizontalPlaceBrick:function(a,b){var c=Math.min.apply(Math,b),d=0;for(var e=0,f=b.length;e<f;e++)if(b[e]===c){d=e;break}var g=c,h=this.masonryHorizontal.rowHeight*d;this._pushPosition(a,g,h);var i=c+a.outerWidth(!0),j=this.masonryHorizontal.rows+1-f;for(e=0;e<j;e++)this.masonryHorizontal.rowXs[d+e]=i},_masonryHorizontalGetContainerSize:function(){var a=Math.max.apply(Math,this.masonryHorizontal.rowXs);return{width:a}},_masonryHorizontalResizeChanged:function(){return this._checkIfSegmentsChanged(!0)},_fitColumnsReset:function(){this.fitColumns={x:0,y:0,width:0}},_fitColumnsLayout:function(a){var c=this,d=this.element.height(),e=this.fitColumns;a.each(function(){var a=b(this),f=a.outerWidth(!0),g=a.outerHeight(!0);e.y!==0&&g+e.y>d&&(e.x=e.width,e.y=0),c._pushPosition(a,e.x,e.y),e.width=Math.max(e.x+f,e.width),e.y+=g})},_fitColumnsGetContainerSize:function(){return{width:this.fitColumns.width}},_fitColumnsResizeChanged:function(){return!0},_cellsByColumnReset:function(){this.cellsByColumn={index:0},this._getSegments(),this._getSegments(!0)},_cellsByColumnLayout:function(a){var c=this,d=this.cellsByColumn;a.each(function(){var a=b(this),e=Math.floor(d.index/d.rows),f=d.index%d.rows,g=(e+.5)*d.columnWidth-a.outerWidth(!0)/2,h=(f+.5)*d.rowHeight-a.outerHeight(!0)/2;c._pushPosition(a,g,h),d.index++})},_cellsByColumnGetContainerSize:function(){return{width:Math.ceil(this.$filteredAtoms.length/this.cellsByColumn.rows)*this.cellsByColumn.columnWidth}},_cellsByColumnResizeChanged:function(){return this._checkIfSegmentsChanged(!0)},_straightAcrossReset:function(){this.straightAcross={x:0}},_straightAcrossLayout:function(a){var c=this;a.each(function(a){var d=b(this);c._pushPosition(d,c.straightAcross.x,0),c.straightAcross.x+=d.outerWidth(!0)})},_straightAcrossGetContainerSize:function(){return{width:this.straightAcross.x}},_straightAcrossResizeChanged:function(){return!0}},b.fn.imagesLoaded=function(a){function h(){a.call(c,d)}function i(a){var c=a.target;c.src!==f&&b.inArray(c,g)===-1&&(g.push(c),--e<=0&&(setTimeout(h),d.unbind(".imagesLoaded",i)))}var c=this,d=c.find("img").add(c.filter("img")),e=d.length,f="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==",g=[];return e||h(),d.bind("load.imagesLoaded error.imagesLoaded",i).each(function(){var a=this.src;this.src=f,this.src=a}),c};var w=function(b){a.console&&a.console.error(b)};b.fn.isotope=function(a,c){if(typeof a=="string"){var d=Array.prototype.slice.call(arguments,1);this.each(function(){var c=b.data(this,"isotope");if(!c){w("cannot call methods on isotope prior to initialization; attempted to call method '"+a+"'");return}if(!b.isFunction(c[a])||a.charAt(0)==="_"){w("no such method '"+a+"' for isotope instance");return}c[a].apply(c,d)})}else this.each(function(){var d=b.data(this,"isotope");d?(d.option(a),d._init(c)):b.data(this,"isotope",new b.Isotope(a,this,c))});return this}})(window,jQuery);


;
/*!
// Infinite Scroll jQuery plugin
// copyright Paul Irish, licensed GPL & MIT
// version 1.5.100504

// home and docs: http://www.infinite-scroll.com
*/
 
;(function($){
    
  $.fn.infinitescroll = function(options,callback){
    
    // console log wrapper.
    function debug(){
      if (opts.debug) { window.console && console.log.call(console,arguments)}
    }
    
    // grab each selector option and see if any fail.
    function areSelectorsValid(opts){
      for (var key in opts){
        if (key.indexOf && key.indexOf('Selector') > -1 && $(opts[key]).length === 0){
            debug('Your ' + key + ' found no elements.');    
            return false;
        } 
        return true;
      }
    }


    // find the number to increment in the path.
    function determinePath(path){
      
      path.match(relurl) ? path.match(relurl)[2] : path; 

      // there is a 2 in the url surrounded by slashes, e.g. /page/2/
      if ( path.match(/^(.*?)\b2\b(.*?$)/) ){  
          path = path.match(/^(.*?)\b2\b(.*?$)/).slice(1);
      } else 
        // if there is any 2 in the url at all.
        if (path.match(/^(.*?)2(.*?$)/)){
          
          // page= is used in django:
          //   http://www.infinite-scroll.com/changelog/comment-page-1/#comment-127
          if ( path.match(/^(.*?page=)2(\/.*|$)/) ){
            path = path.match(/^(.*?page=)2(\/.*|$)/).slice(1);
            return path;
          }
          
          debug('Trying backup next selector parse technique. Treacherous waters here, matey.');
          path = path.match(/^(.*?)2(.*?$)/).slice(1);
      } else {
          
        // page= is used in drupal too but second page is page=1 not page=2:
        // thx Jerod Fritz, vladikoff
        if (path.match(/^(.*?page=)1(\/.*|$)/)) {
          path = path.match(/^(.*?page=)1(\/.*|$)/).slice(1);
          return path;
        }  

        debug('Sorry, we couldn\'t parse your Next (Previous Posts) URL. Verify your the css selector points to the correct A tag. If you still get this error: yell, scream, and kindly ask for help at infinite-scroll.com.');    
        props.isInvalidPage = true;  //prevent it from running on this page.
      }
      
      return path;
    }


    // 'document' means the full document usually, but sometimes the content of the overflow'd div in local mode
    function getDocumentHeight(){
      // weird doubletouch of scrollheight because http://soulpass.com/2006/07/24/ie-and-scrollheight/
      return opts.localMode ? ($(props.container)[0].scrollHeight && $(props.container)[0].scrollHeight) 
                                // needs to be document's height. (not props.container's) html's height is wrong in IE.
                                : $(document).height()
    }
    
    
        
    function isNearBottom(){
      
      // distance remaining in the scroll
      // computed as: document height - distance already scroll - viewport height - buffer
      var pixelsFromWindowBottomToBottom = 0 +
                getDocumentHeight()  - (
                    opts.localMode ? $(props.container).scrollTop() : 
                    // have to do this bs because safari doesnt report a scrollTop on the html element
                    ($(props.container).scrollTop() || $(props.container.ownerDocument.body).scrollTop())
                    ) - $(opts.localMode ? props.container : window).height();
      
      debug('math:',pixelsFromWindowBottomToBottom, props.pixelsFromNavToBottom);
      
      // if distance remaining in the scroll (including buffer) is less than the orignal nav to bottom....
      return (pixelsFromWindowBottomToBottom  - opts.bufferPx < props.pixelsFromNavToBottom);    
    }    
    
    function showDoneMsg(){
      props.loadingMsg.hide();
      
      // user provided callback when done    
      opts.errorCallback();
    }
    
    function infscrSetup(){
    
        if (props.isDuringAjax || props.isInvalidPage || props.isDone) return; 
        
        if ( !isNearBottom(opts,props) ) return; 
        
        $(document).trigger('retrieve.infscr');
                
                
    }  // end of infscrSetup()
          
  
      
    function kickOffAjax(){
        
        // we dont want to fire the ajax multiple times
        props.isDuringAjax = true; 
        
        // show the loading message and hide the previous/next links
        props.loadingMsg.show();
        $( opts.navSelector ).hide(); 
        
        // increment the URL bit. e.g. /page/3/
        props.currPage++;
        
        debug('heading into ajax',path);
        
        // if we're dealing with a table we can't use DIVs
        box = $(opts.contentSelector).is('table') ? $('<tbody/>') : $('<div/>');  
        frag = document.createDocumentFragment();


        box.load( path.join( props.currPage ) + ' ' + opts.itemSelector,null,loadCallback); 
        
    }
    
    function loadCallback(){
        // if we've hit the last page...
        if (props.isDone){ 
            showDoneMsg();
            return false;    
              
        } else {
          
            var children = box.children().get();
            
            // if it didn't return anything
            if (children.length == 0){
              // fake an ajaxError so we can quit.
              return $.event.trigger( "ajaxError", [{status:404}] ); 
            } 
            
            // use a documentFragment because it works when content is going into a table or UL
            while (box[0].firstChild){
              frag.appendChild(  box[0].firstChild );
            }

           	$(opts.contentSelector)[0].appendChild(frag);
            
            // fadeout currently makes the <em>'d text ugly in IE6
            props.loadingMsg.fadeOut('normal' ); 

            // smooth scroll to ease in the new content
            if (opts.animate){ 
                var scrollTo = $(window).scrollTop() + opts.extraScrollPx + 'px';
                $('html,body').animate({scrollTop: scrollTo}, 800,function(){ props.isDuringAjax = false; }); 
            }
        
            // previously, we would pass in the new DOM element as context for the callback
            // however we're now using a documentfragment, which doesnt havent parents or children,
            // so the context is the contentContainer guy, and we pass in an array
            //   of the elements collected as the first argument.
            callback.call( $(opts.contentSelector)[0], children );
        
            if (!opts.animate) props.isDuringAjax = false; // once the call is done, we can allow it again.
        }
    }
    
      
    // lets get started.
    $.browser.ie6 = $.browser.msie && $.browser.version < 7;
    
    var opts    = $.extend({}, $.infinitescroll.defaults, options),
        props   = $.infinitescroll, // shorthand
        box, frag;
        
    callback    = callback || function(){};
    
    if (!areSelectorsValid(opts)){ return false;  }
    
     // we doing this on an overflow:auto div?
    props.container   =  opts.localMode ? this : document.documentElement;
                          
    // contentSelector we'll use for our .load()
    opts.contentSelector = opts.contentSelector || this; 
    
    
    // get the relative URL - everything past the domain name.
    var relurl        = /(.*?\/\/).*?(\/.*)/,
        path          = $(opts.nextSelector).attr('href');
    
    
    if (!path) { debug('Navigation selector not found'); return; }
    
    // set the path to be a relative URL from root.
    path          = determinePath(path);
    

    // reset scrollTop in case of page refresh:
    if (opts.localMode) $(props.container)[0].scrollTop = 0;

    // distance from nav links to bottom
    // computed as: height of the document + top offset of container - top offset of nav link
    props.pixelsFromNavToBottom =  getDocumentHeight()  +
                                     (props.container == document.documentElement ? 0 : $(props.container).offset().top )- 
                                     $(opts.navSelector).offset().top;
    
    // define loading msg
    props.loadingMsg = $('#infscr-loading');    
     // preload the image
    (new Image()).src    = opts.loadingImg;
              

  
    // set up our bindings
    $(document).ajaxError(function(e,xhr,opt){
      debug('Page not found. Self-destructing...');    
      
      // die if we're out of pages.
      if (xhr.status == 404){ 
        showDoneMsg();
        props.isDone = true; 
        $(opts.localMode ? this : window).unbind('scroll.infscr');
      } 
    });
    
    // bind scroll handler to element (if its a local scroll) or window  
    $(opts.localMode ? this : window)
      .bind('scroll.infscr', infscrSetup)
      .trigger('scroll.infscr'); // trigger the event, in case it's a short page
    
    $(document).bind('retrieve.infscr',kickOffAjax);
    
    return this;
  
  }  // end of $.fn.infinitescroll()
  

  
  // options and read-only properties object
  
  $.infinitescroll = {     
        defaults      : {
                          debug           : false,
                          preload         : false,
                          nextSelector    : "div.navigation a:first",
                          loadingImg      : "http://www.infinite-scroll.com/loading.gif",
                          loadingText     : "<em>Loading the next set of posts...</em>",
                          navSelector     : "div.navigation",
                          contentSelector : null,           // not really a selector. :) it's whatever the method was called on..
                          extraScrollPx   : 150,
                          itemSelector    : "div.post",
                          animate         : false,
                          localMode      : false,
                          bufferPx        : 40,
                          errorCallback   : function(){}
                        }, 
        loadingImg    : undefined,
        loadingMsg    : undefined,
        container     : undefined,
        currPage      : 1,
        currDOMChunk  : null,  // defined in setup()'s load()
        isDuringAjax  : false,
        isInvalidPage : false,
        isDone        : false  // for when it goes all the way through the archive.
  };
  


})(jQuery);