function SelectAllCheckBox(sender)
{
    var tab = sender;
    while (tab.tagName != 'TABLE')
        tab = tab.parentNode;
        
   var chkList = tab.getElementsByTagName('input')
   for (var i = 0; i < chkList.length; i++)
   {
        chkItem = chkList[i];
        if(chkItem.type == 'checkbox')
            chkItem.checked = sender.checked;
   }    
}