jquery.equalize_height.js

//Usage
try {
  $(window).on('load', function() {
    equalize_height($('#parent'), '.element');
  });

  $(window).resize(function(){
    equalize_height($('#parent'), '.element');
  });
} catch(err) {console.log(err);}

//Function
function equalize_height(container, selector_it) {
  var currentTallest = 0,
  currentRowStart = 0,
  rowDivs = [],
  $el,
  topPosition = 0;

  container.find(selector_it).each(function() {
    $el = $(this);

    $($el).height('auto');
    topPostion = $el.position().top;

    if (currentRowStart != topPostion) {
      for (currentDiv = 0 ; currentDiv < rowDivs.length ; currentDiv++) {
        rowDivs[currentDiv].height(currentTallest);
      }
      rowDivs.length = 0; // empty the array
      currentRowStart = topPostion;
      currentTallest = $el.height();
      rowDivs.push($el);
    } else {
      rowDivs.push($el);
      currentTallest = (currentTallest < $el.height()) ? ($el.height()) : (currentTallest);
    }
    for (currentDiv = 0 ; currentDiv < rowDivs.length ; currentDiv++) {
      rowDivs[currentDiv].height(currentTallest);
    }
  });
}