var imgPlus = new Image();
var imgMinus = new Image();
imgPlus.src = "grafika/vec.gif";
imgMinus.src = "grafika/vec_f2.gif";

function toggleDisplay(e){
  var tableLink = "tabelaHref" + e;
  var style = document.getElementById("tabela" + e).style;
  var img = document.getElementById("slika" + e);
  var napis = document.getElementById("napis" + e);

  if (style.display == 'none') {
    style.display = 'block';
    img.src = imgMinus.src;
    document.getElementById(tableLink).title='Skrij  podrobnosti';
	napis.style.fontWeight='bold';
  } else {
    style.display = 'none';
    img.src = imgPlus.src;
    document.getElementById(tableLink).title='Prikaži več';
	napis.style.fontWeight='normal';
  }
}