function setImgActive(mpId) {
  currSrc = document.getElementById('img_'+mpId).src;
  newSrc = currSrc.replace(/passiv/, 'aktiv');
  if (currSrc != newSrc)
    document.getElementById('img_'+mpId).src=newSrc;
}

function setImgPassive(mpId) {
  currSrc = document.getElementById('img_'+mpId).src;
  newSrc = currSrc.replace(/aktiv/, 'passiv');
  if (currSrc != newSrc)
    document.getElementById('img_'+mpId).src=newSrc;
}

function hideAllDivs(divName) {
  allDivs = document.getElementsByName(divName);
  for (i=0; i<allDivs.length; i++) {
    allDivs[i].style.display='none';
  }
}

function displayDetails(detailsID, divName) {
  hideAllDivs(divName);
  
  document.getElementById(detailsID).style.display='block';
}