function addEvent( obj, type, fn )
{
	if (obj.addEventListener) {
		obj.addEventListener( type, fn, false );
	} else if (obj.attachEvent) {
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function removeEvent( obj, type, fn )
{
	if (obj.removeEventListener) {
		obj.removeEventListener( type, fn, false );
	} else if (obj.detachEvent) {
		obj.detachEvent( "on"+type, obj[type+fn] );
		obj[type+fn] = null;
		obj["e"+type+fn] = null;
	}
}

function launch_page(obj) {
  var anchors = document.getElementById(obj).getElementsByTagName('a');
  
  var txt = '<select id="new'+obj+'"><option>'+document.getElementById('link').innerHTML+'</option>';
  
  for(var i=0; i < anchors.length; i++) {
    txt += '<option value="'+anchors[i]+'">'+anchors[i].innerHTML+'</option>';
  }
  
  txt += '</select>';
  
  document.getElementById(obj).innerHTML = txt;
  
  addEvent(document.getElementById('new'+obj),'change', function() { window.location = document.getElementById('new'+obj).value; } );
}

addEvent(window,'load',function() { launch_page('liste'); });