Button change

[OlliT]

Habe was im Forum gefunden:

var b = new Array();
 b[0] = new Image(); b[0].src = "impressum.gif";
 b[1] = new Image(); b[1].src = "impressum_o";
 b[2] = new Image(); b[2].src = "impressum_d";
 b[3] = new Image(); b[3].src = "home.gif";

var nr = 0;
var cha = "yes";
var but = "images/buttons/impressum.gif";

function mOver(nr) {
 but = document.images[nr].src;
 if (cha  == "yes")
 document.images[nr].src = b[1].src;
}

function mOut(nr) {
 if (cha == "yes" && but == "images/buttons/impressum.gif") {
  document.images[nr].src = b[0].src;
 }
 if (cha == "yes" && but == "images/buttons/home.gif") {
  document.images[nr].src = b[3].src;
 }
 if (cha  == "no") {
  cha = "yes";
 }
}

function mClick(nr) {
 cha = "no";
 document.images[nr].src = b[2].src;
}

function mClickwas(nr) {
 cha = "yes";
 document.images[nr].src = b[3].src;
}

nur wie binde ich das in HTML ein ? das der button auch wechselt ?

OlliT