<!--


//TOGGLE LAYER


function toggleLayer( whichLayer )

{

  var elem, vis;

  if( document.getElementById )

    elem = document.getElementById( whichLayer );

  else if( document.all )

      elem = document.all[whichLayer];

  else if( document.layers )

    elem = document.layers[whichLayer];

  vis = elem.style;

  
  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)

    vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';

  vis.display = (vis.display==''||vis.display=='block')?'none':'block';

}


//-->