var bo = new Array();
bo[0] = new Image(); bo[0].src = "/images/btn_home!.gif";
bo[1] = new Image(); bo[1].src = "/images/btn_products!.gif";
bo[2] = new Image(); bo[2].src = "/images/btn_contact!.gif";
bo[3] = new Image(); bo[3].src = "/images/btn_customers!.gif";
bo[4] = new Image(); bo[4].src = "/images/btn_en!.gif";
bo[5] = new Image(); bo[5].src = "/images/btn_de!.gif";
var bn = new Array();
bn[0] = new Image(); bn[0].src = "/images/btn_home.gif";
bn[1] = new Image(); bn[1].src = "/images/btn_products.gif";
bn[2] = new Image(); bn[2].src = "/images/btn_contact.gif";
bn[3] = new Image(); bn[3].src = "/images/btn_customers.gif";
bn[4] = new Image(); bn[4].src = "/images/btn_en.gif";
bn[5] = new Image(); bn[5].src = "/images/btn_de.gif";

function Bip(idx)
{
  window.document.images["b"+idx].src = bo[idx].src;
}

function Bop(idx)
{
  window.document.images["b"+idx].src = bn[idx].src;
}