[xelawho]

just eyeballing it, I'd say it would be something like this:

for (i=0; i<items.length; i++){
els = items[i].split("|");
li = document.createElement("li");
li.innerHTML = els[0];
frag.appendChild(li);
li.onclick=function(){
document.getElementById("ajaxName").value=this.innerHTML;
}
}

completely untested, but something like that...