OpenMenuNode = function(oThis) {
if (oThis.parentNode.className == '') {
oThis.parentNode.className = 'close';
  } else {
oThis.parentNode.className = '';
  }

var content_height = $("#content").height();
var menu_height = $("#main_menu").height() - 350;

$("#content").height('auto');

if ($("#content").height() < menu_height) {
$("#content").height(menu_height);
  }

  return false;
}