function openPopUp(URL,NAME,WIDTH,HEIGHT,SB){
  if (SB){}else SB="yes";
  if (HEIGHT){}else HEIGHT=400;
  if (WIDTH){}else WIDTH=600;
  OPT="height="+HEIGHT+",width="+WIDTH+",scrollbars="+SB;
  win=window.open(URL,NAME,OPT);
  win.focus();
  return;
  }
  
function ChangeSemBu(but){
  kre_on=new Image();     kre_on.src="images/pic_link_kreativ_on.jpg";
  kre_off=new Image();    kre_off.src="images/pic_link_kreativ_off.jpg";
  zuk_on=new Image();     zuk_on.src="images/pic_link_zukunft_on.jpg";
  zuk_off=new Image();     zuk_off.src="images/pic_link_zukunft_off.jpg";
  document.kreativ.src=kre_off.src;
  document.zukunft.src=zuk_off.src;
  if (but=="kre")document.kreativ.src=kre_on.src;
  if (but=="zuk")document.zukunft.src=zuk_on.src;
  }