The function definition is shown below. It takes two arguments : The name attribute value and the mode you wish to use.

<script language="JavaScript">
<!-- Begin
function toggleByName(sName,sMode)
{
// This function shows/hides or toggles the
// visibility of all elements with their
// name attribute set to sName
//
// mode 0 - Hide
// mode 1 - Show
// mode 2 - Toggle
//
// http://www.mattsbits.co.uk

var elements = document.getElementsByName(sName);
var i=0;
        
  // For each item with name sName
  for (i=0;i<elements.length;i++)
  {
    switch (sMode) {
    case 0:
      // Hide
      elements[i].style.display='none';    
      break;
    case 1:
      // Show
      elements[i].style.display='block';    
      break;
    case 2:
      // Toggle
      if (elements[i].style.display=='none') {
        elements[i].style.display='block'; 
      } else {
        elements[i].style.display='none'; 
      }  
      break;   
    }
  }
}
//  End -->
</script>

Many elements can share the same name value and this function will affect all of them.