$(document).ready(function() {

  // override some default options
  $('div.expandable').expander({
    expandText:       '<IMG SRC="/img/buttons/Button_Referenzen_und_mehr.png" WIDTH="278" HEIGHT="25" BORDER="0">', // default is 'read more...'
    userCollapseText: '<IMG SRC="/img/buttons/Button_Referenzen_einklappen.png" WIDTH="278" HEIGHT="25" BORDER="0">',  // default is '[collapse expanded text]'
    expandPrefix:     '',
    slicePoint:       0
  });
  
});