function toggleTable(el) {

  var myelement = document.getElementById(el);
  var nameelement = document.getElementById(el + "-featurename");
  var myimg = document.getElementById(el + "-img");

  if( !myelement.style.display || myelement.style.display == "none" ) {
myelement.style.display = "inline";
    myimg.src= "images/minus.gif";
    nameelement.style.fontWeight = "bold";
  } else {
    myelement.style.display = "none";
    myimg.src= "images/plus.gif";
    nameelement.style.fontWeight = "normal";
  }
}