Set equal height of div using jquery

equalheight = function(container){  
var currentTallest = 0,
  currentRowStart = 0,
  rowDivs = new Array(),
  $el,
  topPosition = 0;
$(container).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);
   }
 });
}

$(window).load(function() {
  equalheight('.blog-main article');
});


$(window).resize(function(){
  equalheight('.blog-main article');
});

Html