pic=new Image();
pic.src="hannes.jpg";
pic1=new Image ();
pic1.src="hbp.jpg";
pic2=new Image();
pic2.src="hbg.jpg";
pic3=new Image ();
pic3.src="hbb.jpg";
pic4=new Image ();
pic4.src="hby.jpg";

function tocv ()
{
  window.document.images[1].src=pic1.src;
//onmouseover
}
function home ()
{
  window.document.images[1].src=pic.src;
//onmouseout
}
function todelphi ()
{
  window.document.images[1].src=pic2.src;
//onmouseover
}
function germ ()
{
  window.document.images[1].src=pic3.src;
//onmouseover
}
function contact ()
{
  window.document.images[1].src=pic4.src;
//onmouseover
}