// navi
aktiv = 'home';
function changeTopNavi(id,which,cmd){
  if(cmd == '1'){
    if(document.getElementById(aktiv)){
      document.getElementById(aktiv).src = 'img/navi/'+aktiv+'.gif';
    }
    aktiv = id;
  }

  if(document.getElementById(id) && id != aktiv){
    document.getElementById(id).src = which;
  }
}

// new window
function openWin(which,wi,hi) {
  fenster = window.open(which,'','width='+wi+',height='+hi+',scrollbars=yes');
  fenster.moveTo(((window.screen.availWidth/2)-(wi/2)),((window.screen.availHeight/2)-(hi/2)));
  fenster.focus();
}