Blondinka,
addAllElements: function() {
var tbody = document.getElementsByTagName("TBODY")[0],
f = document.createDocumentFragment();
for (var k = 0; k < list.test.length; k++) {
var tr = document.createElement("TR");
for (var i = 0; i < 3; i++) {
var td = document.createElement("TD"),
text = document.createTextNode(list.test[k][i]);
td.appendChild(text);
tr.appendChild(td);
}
f.appendChild(tr);
}
tbody.appendChild(f);
}