function returnObjById(id) {
	var returnVar;
	
    if (document.getElementById)	returnVar = document.getElementById(id);
    else if (document.all) 			returnVar = document.all[id];
    else if (document.layers)		returnVar = document.layers[id];

    return returnVar;
}

function addElement(parent, childType, childId) {
  var newdiv = document.createElement(childType);
  newdiv.setAttribute('id',childId);
  parent.appendChild(newdiv);
  
  return newdiv;
}