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+---
+title: centered masonry
+layout: demo
+category: tests
+---
+
+<style>
+  #container {
+    margin: 0 auto 20px;
+  }
+</style>
+
+<section id="copy">
+  <p>Isotope&rsquo;s capabilities are designed to be used together cohesively. You can do it all &mdash; filter, sort, change layout modes, add items &mdash; and Isotope will handle it with ease.</p>
+</section>
+
+<section id="options" class="clearfix">
+
+  <h3>Filters</h3>
+
+  <ul id="filters" class="option-set floated clearfix">
+    <li><a href="#show-all" class="selected">show all</a></li>
+    <li><a href="#metalloid">metalloid</a></li>
+    <li><a href="#metal">metal</a></li>
+    <li><a href="#alkali">alkali</a></li>
+    <li><a href="#alkaline-earth">alkaline-earth</a></li>
+    <li><a href="#inner-transition">inner-transition</a></li>
+    <li><a href="#lanthanoid">lanthanoid</a></li>
+    <li><a href="#actinoid">actinoid</a></li>
+    <li><a href="#transition">transition</a></li>
+    <li><a href="#post-transition">post-transition</a></li>
+    <li><a href="#nonmetal">nonmetal</a></li>
+    <li><a href="#other">other</a></li>
+    <li><a href="#halogen">halogen</a></li>
+    <li><a href="#noble-gas">noble-gas</a></li>
+  </ul>
+
+  {% include sort-buttons.html %}
+
+  <h3>Etc</h3>
+
+  <ul id="etc" class="floated clearfix">
+
+    <li id="toggle-sizes"><a href="#toggle-sizes">Toggle variable sizes</a></li>
+    <li id="insert"><a href="#insert">Insert new elements</a></li>
+    <li id="append"><a href='#append'>Append new elements</a></li>
+    <!-- <li id="shuffle"><a href='#shuffle'>Shuffle</a></li> -->
+  </ul>
+</section> <!-- #options -->
+
+<div id="container" class="clickable clearfix">
+  {% for elem_number in site.best_of_order %}
+    {% assign element = site.elements[elem_number] %}
+    {% include element-partial.html %}
+  {% endfor %}
+</div>
+
+
+<script src="../{{ site.jquery_js }}"></script>
+<script src="../{{ site.isotope_js }}"></script>
+<script src="../js/fake-element.js"></script>
+<script>
+
+  $.Isotope.prototype._getCenteredMasonryColumns = function() {
+    this.width = this.element.width();
+    
+    var parentWidth = this.element.parent().width();
+    
+                  // i.e. options.masonry && options.masonry.columnWidth
+    colW = this.options.masonry && this.options.masonry.columnWidth ||
+                  // or use the size of the first item
+                  this.$filteredAtoms.outerWidth(true) ||
+                  // if there's no items, use size of container
+                  parentWidth;
+    
+    cols = Math.floor( parentWidth / colW );
+    cols = Math.max( cols, 1 );
+
+    // i.e. this.masonry.cols = ....
+    this.masonry.cols = cols;
+    // i.e. this.masonry.columnWidth = ...
+    this.masonry.columnWidth = colW;
+    
+    return this;
+  };
+  
+  $.Isotope.prototype._masonryReset = function() {
+    // layout-specific props
+    this.masonry = {};
+    // FIXME shouldn't have to call this again
+    this._getCenteredMasonryColumns();
+    var i = this.masonry.cols;
+    this.masonry.colYs = [];
+    while (i--) {
+      this.masonry.colYs.push( this.posTop );
+    }
+    return this;
+  };
+
+  $.Isotope.prototype._masonryResize = function() {
+    var prevColCount = this.masonry.cols;
+    // get updated colCount
+    this._getCenteredMasonryColumns();
+    if ( this.masonry.cols !== prevColCount ) {
+      // if column count has changed, do a new column cound
+      this.reLayout();
+    }
+
+    return this;
+  };
+  
+  $.Isotope.prototype._masonryGetContainerSize = function() {
+    var itemsTotalWidth = 0;
+    this.$filteredAtoms.each(function(){
+      itemsTotalWidth += $(this).outerWidth(true);
+    });
+    
+    var layoutWidth = this.masonry.cols * this.masonry.columnWidth,
+        size = {
+          height : Math.max.apply( Math, this.masonry.colYs ) - this.posTop,
+          width : Math.min(layoutWidth, itemsTotalWidth )
+        };
+    return size;
+    
+  };
+
+  var $container = $('#container');
+
+  $('#filters').find('a').click(function(){
+    // get href attribute, minus the #, plus a . to make it a class
+    var filterName = '.' + $(this).attr('href').slice(1);
+    filterName = filterName === '.show-all' ? '*' : filterName;
+    $container.isotope({ filter: filterName })
+    return false;
+  });
+
+  {% include sort-buttons.js %}
+
+  // change size of clicked element
+  $container.find('.element').live('click', function(){
+    $(this).toggleClass('large');
+    $container.isotope('reLayout');
+  });
+
+  // toggle variable sizes of all elements
+  $('#toggle-sizes').find('a').click(function(){
+    $container
+      .toggleClass('variable-sizes')
+      .isotope('reLayout');
+    return false;
+  });
+
+  {% include add-buttons.js %}
+
+  $('#shuffle a').click(function(){
+    $container.isotope('shuffle');
+    return false;
+  });
+
+  {% include option-buttons.js %}
+  
+
+  $(function(){
+
+    // hacky way of adding random size classes
+    $container.find('.element').each(function(){
+      if ( Math.random() > 0.6 ) {
+        $(this).addClass('width2');
+      }
+      if ( Math.random() > 0.6 ) {
+        $(this).addClass('height2');
+      }
+    });
+
+
+    $container.isotope({
+      itemSelector : '.element',
+      masonry : {
+        columnWidth : 120
+      },
+      animationEngine : $.browser.opera ? 'jquery' : 'best-available',
+      getSortData : {
+        symbol : function( $elem ) {
+          return $elem.attr('data-symbol');
+        },
+        category : function( $elem ) {
+          return $elem.attr('data-category');
+        },
+        number : function( $elem ) {
+          return parseInt( $elem.find('.number').text(), 10 );
+        },
+        weight : function( $elem ) {
+          return parseFloat( $elem.find('.weight').text().replace( /[\(\)]/g, '') );
+        },
+        name : function ( $elem ) {
+          return $elem.find('.name').text();
+        }
+      }
+    });
+
+
+  });
+</script>
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