function hin(object) {
  var x = document.getElementById(object);
  x.style.backgroundImage = 'url(fileadmin/img/'+object+'-over.gif)'    
}

function her(object) {
  var x = document.getElementById(object);
  x.style.backgroundImage = 'url(fileadmin/img/'+object+'.gif)'    
}

function hin_sub(object) {
  var y = document.getElementById(object);
  y.style.Cursor = 'pointer';
  y.src = 'fileadmin/img/'+object+'_on.gif';    
}

function her_sub(object) {
  var y = document.getElementById(object);
  y.style.Cursor = '';
  y.src = 'fileadmin/img/'+object+'.gif';    
}