ASP.NET2.0下利用javascript实现TreeView中的checkbox全选

ASP.NET2.0下利用javascript实现TreeView中的checkbox全选(1)

<td><input id="chkall" type="checkbox" onclick="chkAll();" />全选/取消</td>
 1 <script type="text/Javascript">
 2         function chkAll()
 3         {
 4             //debugger;
 5             var chkall= document.all["chkall"];
 6             var chkother= document.getElementsByTagName("input");
 7             for (var i=0;i<chkother.length;i++)
 8             {
 9                 if( chkother[i].type=='checkbox')
10                 {
11                     if(chkother[i].id.indexOf('TreeView1')>-1)
12                     {
13                         if(chkall.checked==true)
14                         {
15                             chkother[i].checked=true;