两个table之间相互移动数据

<script language=javascript> function moveIt(obj){ var tableId; if(obj.parentNode.parentNode.id == "t1"){ tableId = document.getElementById("t2"); }else{ tableId = document.getElementById("t1"); } var newRow = tableId.insertRow(0); newRow.insertCell(0).innerHTML = obj.cells(0).innerHTML; newRow.insertCell(1).innerHTML = obj.cells(1).innerHTML; obj.removeNode(true); } </script> <table id=t1 border=1> <tr>  <td><input type=checkbox onclick="this.checked=false;{moveIt(this.parentNode.parentNode);}"></td> <td>1</td> </tr> <tr> <td><input type=checkbox onclick="this.checked=false;{moveIt(this.parentNode.parentNode);}"></td> <td>2</td> </tr> </table><hr> <table id=t2 border=1> <tr> <td><input type=checkbox onclick="this.checked=false;{moveIt(this.parentNode.parentNode);}"></td> <td>3</td> </tr> <tr> <td><input type=checkbox onclick="this.checked=false;{moveIt(this.parentNode.parentNode);}"></td> <td>4</td> </tr> </table>