var home0 = new Image(50,19);
home0.src = "image/btHome0.gif";
var home1 = new Image(50,19);
home1.src = "image/btHome1.gif";
var home2 = new Image(50,19);
home2.src = "image/btHome2.gif";

var corpinfo0 = new Image(140,19);
corpinfo0.src = "image/btCorpInfo0.gif";
var corpinfo1 = new Image(140,19);
corpinfo1.src = "image/btCorpInfo1.gif";
var corpinfo2 = new Image(140,19);
corpinfo2.src = "image/btCorpInfo2.gif";

var products0 = new Image(60,19);
products0.src = "image/btProducts0.gif";
var products1 = new Image(60,19);
products1.src = "image/btProducts1.gif";
var products2 = new Image(60,19);
products2.src = "image/btProducts2.gif";

var promo0 = new Image(70,19);
promo0.src = "image/btPromo0.gif";
var promo1 = new Image(70,19);
promo1.src = "image/btPromo1.gif";
var promo2 = new Image(70,19);
promo2.src = "image/btPromo2.gif";

var Office0 = new Image(60,26);
Office0.src = "image/btOffice0.gif";
var Office1 = new Image(60,26);
Office1.src = "image/btOffice1.gif";
var Office2 = new Image(60,26);
Office2.src = "image/btOffice2.gif";

var HospitalSchool0 = new Image(128,26);
HospitalSchool0.src = "image/btHospitalSchool0.gif";
var HospitalSchool1 = new Image(128,26);
HospitalSchool1.src = "image/btHospitalSchool1.gif";
var HospitalSchool2 = new Image(128,26);
HospitalSchool2.src = "image/btHospitalSchool2.gif";

var PubHome0 = new Image(102,26);
PubHome0.src = "image/btPubHome0.gif";
var PubHome1 = new Image(102,26);
PubHome1.src = "image/btPubHome1.gif";
var PubHome2 = new Image(102,26);
PubHome2.src = "image/btPubHome2.gif";

function hitop(placeholder, imageObject)
{
  document.images[placeholder].src = eval(imageObject + ".src")
}