Normal_start= new Image();
Normal_start.src = "images/but_start.gif";     /* start */
Highlight_start = new Image();
Highlight_start.src = "images/but_start_aktiv.gif"; 

Normal_wissen= new Image();
Normal_wissen.src = "images/but_wissen.gif";     /* 1 wissenswertes */
Highlight_wissen = new Image();
Highlight_wissen.src = "images/but_wissen_aktiv.gif"; 

Normal_lup= new Image();
Normal_lup.src = "images/but_lup.gif";     /* 2 leistungen und preise */
Highlight_lup = new Image();
Highlight_lup.src = "images/but_lup_aktiv.gif"; 

Normal_sem= new Image();
Normal_sem.src = "images/but_sem.gif";     /* 3 Seminare */
Highlight_sem = new Image();
Highlight_sem.src = "images/but_sem_aktiv.gif"; 

Normal_cc= new Image();
Normal_cc.src = "images/but_cc.gif";     /* 4 corporate center */
Highlight_cc = new Image();
Highlight_cc.src = "images/but_cc_aktiv.gif"; 

Normal_ueber= new Image();
Normal_ueber.src = "images/but_ueber.gif";     /* 5 ueber */
Highlight_ueber = new Image();
Highlight_ueber.src = "images/but_ueber_aktiv.gif"; 

Normal_faq= new Image();
Normal_faq.src = "images/but_faq.gif";     /* 6 häufig gestellte Fragen */
Highlight_faq = new Image();
Highlight_faq.src = "images/but_faq_aktiv.gif"; 

Normal_recht= new Image();
Normal_recht.src = "images/but_recht.gif";     /* 7 recht */
Highlight_recht = new Image();
Highlight_recht.src = "images/but_recht_aktiv.gif";

Normal_lit= new Image();
Normal_lit.src = "images/but_lit.gif";     /* 8 literatur */
Highlight_lit = new Image();
Highlight_lit.src = "images/but_lit_aktiv.gif"; 

Normal_empf= new Image();
Normal_empf.src = "images/but_empf.gif";     /* 9 empfehlungen */
Highlight_empf = new Image();
Highlight_empf.src = "images/but_empf_aktiv.gif";

Normal_forum= new Image();
Normal_forum.src = "images/but_forum.gif";     /* 10 forum */
Highlight_forum = new Image();
Highlight_forum.src = "images/but_forum_aktiv.gif";

function Bildwechsel(Bildnr,Bildobjekt) {
 window.document.images[Bildnr].src = Bildobjekt.src;
}