$(document).ready(function(){
  $('.leftcontent').each(function(){
    page = $(this).attr('rel');


  
  var rheight = $('.rightcontent').height();
  var lheight = $('.leftcontent').height();
  
  if(rheight > lheight) {
    $('.leftcontent').height(rheight);  
  }
  if(rheight < lheight) {
    $('.rightcontent').height(lheight);  
  }
  
  });
  
});