jQuery(document).ready(function(){
  jQuery("#mainnav ul:first").addClass('sf-menu');
  jQuery("#mainnav ul:first").superfish();
  jQuery("#mainnav").css('display', 'block');
  jQuery("#mainnav ul:first li:last").addClass('last-item');
  //jQuery(document).pngFix();
  
  //left sidebar and main content should have equivalent height
  var lsHeight = $(".left_sidebar").height();
  var mcHeight = $(".main_content").height()+60; //60 = padding
  var mcHeightS = mcHeight-196//subtract the height of the bottom image
  if(lsHeight>mcHeight){
    $(".main_content").css('height',lsHeight-60+'px');
  } else {
   $(".left_sidebar_container").css('height',mcHeightS+'px');
  }
});