da random a sequenziale

[Xinod]

var n=0
function cban(chi) {
// var n = Math.floor(Math.random()*imm.length);
document.getElementById("iban"+chi).src = imm[n];
document.getElementById("lban"+chi).href = lnk[n];
document.getElementById("lban"+chi).target = "_blank";
n++
}