1    function insert(){ 2              var tarDiv = document.getElementById("aId"); 3              var newDiv = document.createElement("div"); 4                  newDiv.innerHTML = "insert"; 5                  newDiv.id = "insert"; 6                  oInsert.insertAfter(newDiv, tarDiv); 7           } 8  9           var oInsert = {10              insertAfter: function(newEl, targetEl){11                  var parent = targetEl.parentNode;12                  if(parent.lastChild == targetEl){13                       parent.appendChild(newEl, targetEl);14                  }else{15                       parent.insertBefore(newEl, targetEl.nextSibling);16                  }  17              }18  19           }