/* dropdownType
   FORMAT		0
   PROGRAMME	1
   GENRE		2
   BROADCASTER	3
   DISTRIBUTOR	4
*/

function dropdownredirector(ix,type)
{switch (parseInt(ix))
   {case 0: /* do nothing */ break;
   
    case -1: /* all items */
     switch (parseInt(type))
      {case 0: document.location.href='distribution_results.aspx?type=0&formats=true'; break;
       case 1: document.location.href='catalogue_results.aspx?type=0&programmes=true'; break;
       default: alert ('not implemented'); break;
      }
     break;
     
    default: 
     /* individual items */
     switch (parseInt(type))
      {case 0: /* fall thro */
       case 1: document.location.href='catalogue_detail.aspx?w2wprogram='+ix; break;
	   case 2: document.location.href='catalogue_results.aspx?type=2&formats=true&programmes=true&genre='+ix; break;
       case 3: document.location.href='catalogue_results.aspx?type=4&dataitem=' + ix; break;
       case 4: document.location.href='catalogue_results.aspx?type=4&dataitem='+ix; break;
       default: alert ('not implemented'); break;
      }
     break; 
	}
}