function ezjs_toggleCheckboxes( formname, checkboxname )
{
    with( formname )
	{
        for( var i=0; i<elements.length; i++ )
        {
            if( elements[i].type == 'checkbox' && elements[i].name == checkboxname && elements[i].disabled == "" )
            {
                if( elements[i].checked == true )
                {
                    elements[i].checked = false;
                }
                else
                {
                    elements[i].checked = true;
                }
            }
        }
    }
}