var aktiv = 0;
function ShowThisHideOthers (showthis) {
  window.clearTimeout(aktiv);
  document.getElementById(showthis).style.display = 'block';
  
  if (showthis != "submenu_home") document.getElementById("submenu_home").style.display = 'none';
  if (showthis != "submenu_research") document.getElementById("submenu_research").style.display = 'none';
  if (showthis != "submenu_publications") document.getElementById("submenu_publications").style.display = 'none';
  if (showthis != "submenu_teaching") document.getElementById("submenu_teaching").style.display = 'none';
}
function startShowCurrent () {
  aktiv = window.setTimeout("ShowCurrent()", 250);
}

function ShowCurrent () {
  document.getElementById(currentmenu).style.display = 'block';
  
  //document.getElementById("ichbins").style.background = 'url(\"button-new/tab-center_dark.png\") repeat-x center top';
  
  if (currentmenu != "submenu_home") document.getElementById("submenu_home").style.display = 'none';
  if (currentmenu != "submenu_research") document.getElementById("submenu_research").style.display = 'none';
  if (currentmenu != "submenu_publications") document.getElementById("submenu_publications").style.display = 'none';
  if (currentmenu != "submenu_teaching") document.getElementById("submenu_teaching").style.display = 'none';
}