// Looks for the nearest parent with a class name of 'minimized' or
// 'maximized', and changes its class to 'closed'.
// With the correct style sheet, this will hide the whole section
// (not only the minimizable content).
// This will mean that you can't "unclose" the object.
function ww_doClose( event )
{
  var ele = ww_getMinimizer( event );
  if ( ele ) {
    ele.className = "ww_closed";
  }
  return false; // Stops browser from processing the <a> tag and further.
}

// Looks for the nearest parent with a class name of 'minimized' or
// 'maximized', and changes its class to toggles its class between
// 'minimized' and 'maximized'
function ww_doToggleMinimize( event )
{
  var ele = ww_getMinimizer( event );
  if ( ele ) {
    if ( ele.className == "ww_minimized" ) {
      ele.className = "ww_maximized";
    } else {
      ele.className = "ww_minimized";
    }
  }
  return false;
}

// Looks for the nearest parent with a class name of 'minimized' or
// 'maximized', and changes its class to 'minimized'.
// With the correct style sheet, this will hide any inner sections with a
// class name of 'minimizable'.
function ww_doMinimize( event )
{
  var ele = ww_getMinimizer( event );
  if ( ele ) {
    ele.className = "ww_minimized";
  }
  return false;
}
// Looks for the nearest parent with a class name of 'minimized' or
// 'maximized', and changes its class to 'minimized'.
// This undoes the behaviour of doMinimize.
function ww_doMaximize( event )
{
  var ele = ww_getMinimizer( event );
  if ( ele ) {
    ele.className = "ww_maximized";
  }
  return false;
}

// PRIVATE
// Looks for the nearest parent with a class name of 'minimized' or
// 'maximized'. Returns null if one is not found.
function ww_getMinimizer( event )
{
  var ele;
  if (event.srcElement) {
    ele = event.srcElement;
  } else {
    ele = event.target;
  }

	if (ele) {
		do {
			ele = ele.parentNode;
		} while (ele && (ele.className != 'ww_minimized') && (ele.className != 'ww_maximized') );
	}

  return ele;
}