domCreate.js

(function(obj) {
var idName="asLoggerConsole";
var idLineName="asLoggerConsoleLine";
var d = document;
var div = d.getElementById(idName);
if(!div) {
    div = d.createElement("div");
    div.id = idName;
    div.class = idName + "Class";
    d.body.appendChild(div)
}
var createLogLine = function(message) {
    var d = document;
    var p = d.createElement("p");
    p.id = idLineName + "_" + d.getElementById(idName).childElementCount;
    p.class = idLineName + "Class";
    p.appendChild(d.createTextNode(message));
    p.style["margin"] = 0;
    p.style["padding"] = 0;
    return p;
}
var objToText = function(obj) {
    return obj.toString();
}

div.appendChild(createLogLine(objToText(obj)));
})("aa")