javascript - Isotope filter with jquery css overlays not working as expected -

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i have strange problem, using isotope's filterable function sort through elements in portfolio. when user hovers on portfolio element overlay triggered using following code:

/***************************************************         portfolio item image hover ***************************************************/ $(window).load(function(){      $(".portfolio-grid ul li .item-info-overlay").hide();      if( is_touch_device() ){         $(".portfolio-grid ul li").click(function(){              var count_before = $(this).closest("li").prevall("li").length;              var this_opacity = $(this).find(".item-info-overlay").css("opacity");             var this_display = $(this).find(".item-info-overlay").css("display");               if ((this_opacity == 0) || (this_display == "none")) {                 $(this).find(".item-info-overlay").fadeto(250, 1);             } else {                 $(this).find(".item-info-overlay").fadeto(250, 0);             }              $(this).closest("ul").find("li:lt(" + count_before + ") .item-info-overlay").fadeto(250, 0);             $(this).closest("ul").find("li:gt(" + count_before + ") .item-info-overlay").fadeto(250, 0);              });       }     else{                $(".portfolio-grid ul li").hover(function(){                 $(this).find(".item-info-overlay").fadeto(250, 1);                 }, function() {                     $(this).find(".item-info-overlay").fadeto(250, 0);                   });          } });

however, other elements hidden due way isotope filters receive 'overlay' property/class (confirmed in chrome inspector) when ones shown not. think has $(this).find selecting wrong elements doesn't understand filter isotope, can't sure.

the phenomenon visible if go http://fagardesigns.com/portfolio click 'aftermovie' , scroll on 'paint splash' 2nd row 3rd right.

if reload page, disappears strange thing.

here's see: works if choose filter switch other filters. however, in jquery.isotope.min.js initializing isotope (why doing here instead of in custom.js?), initial filter advertisement

var $container = $('#thumbs');       $container.isotope({         filter: '.advertisement', <= why initial filter?         itemselector : '.item',         animationengine : 'jquery',         animationoptions: {             duration: 250,             easing: 'linear',             queue: false         }       });

and why re-initializing isotope when window resizes?

    $(window).resize(function() {         var $container = $('#thumbs');             $container.isotope({                 filter: '.advertisement',                 itemselector : '.item',                 animationengine : 'jquery',                 animationoptions: {                     duration: 250,                     easing: 'linear',                     queue: false                 }         });     });

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