動態增加table

function   AddRecord()
{ 
var   row   =   activeTable.insertRow(activeTable.rows.length);
//id=recordTable 
var   col   =   row.insertCell(0);
var   i   =   row.rowIndex; 
col.innerHTML   =   ""; 

col   =   row.insertCell(1); 

col.innerHTML   =   ""; 

col   =   row.insertCell(2); 
col.innerHTML   =   "";
}