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benton · 12-30-2008, 04:01 AM

I was finally able to figure this one out and thought I would post the result here in case others need such a solution. The argument is the name of the main checkbox.

HTML Code:

function ChangeClickedStatus(boxname)
{
  var ison = document.getElementsByName(boxname)[0].checked; 
  var elm = document.getElementsByTagName("input");

  for (j = 0; j < elm.length; j++) 
  {
    if (elm[j].type == 'checkbox')
    {
      if (elm[j].name.search(boxname + "_") == 0)
      {
         if (ison == true)
           elm[j].checked = true;
         else
           elm[j].checked = false;
      }
    } 
  }     
}