var blockhide;

function showPortfolioSubLinks (showlinks) {
 if (showlinks == true) {
  document.getElementById('portfolio_sublinks').style.display = "block";
 } else {
  if (blockhide == false) {
   document.getElementById('portfolio_sublinks').style.display = "none";
  }
 }
}

function highlightSubLink (linkname) {
 document.getElementById('fotografien').style.color = "#FFFFFF";
 document.getElementById('kampagne').style.color = "#FFFFFF";
 document.getElementById('cd').style.color = "#FFFFFF";
 document.getElementById('zeichnungen').style.color = "#FFFFFF";
 document.getElementById('plakate').style.color = "#FFFFFF";
 document.getElementById('lebenslauf').style.color = "#FFFFFF";
 document.getElementById('portfolio').style.color = "#FFFFFF";
 document.getElementById('kontakt').style.color = "#FFFFFF"; 
 
 document.getElementById(linkname).style.color = "#BBBBBB";

 if (linkname != 'lebenslauf' && linkname != 'kontakt') {
  document.getElementById('portfolio').style.color = "#BBBBBB";
  blockhide = true;
 } else {
  blockhide = false;
  document.getElementById('portfolio_sublinks').style.display = "none";   
 }
}