var agent = navigator.appVersion;
var ns = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)));
var mac = (agent.indexOf('mac')!=-1);
var ns4 = (ns && (major == 4));

var strImg= ALK_URL_SI_IMAGES+'gen/transp.gif';
var actu_scroller_haut = "";
var actu_scroller_bas = "";
var actu_scroll_hauteur = 120;
var oTimeoutPause = null;
var oTimeoutScroll = null;
var bPause = false;
var actu_scroll_pause_seconde = 0.05;

function actu_scroll_start()
{
  if(actu_scroll_mode == 1) {
    actu_scroller_haut = "actu_scroller_1";
    actu_scroller_bas = "actu_scroller_2";
    actu_scroll_mode = 0;
  } else {
    actu_scroller_bas = "actu_scroller_1";
    actu_scroller_haut = "actu_scroller_2";
    actu_scroll_mode = 1;
  }

  actu_scroll_nb_message = actu_scroll_message.length-1;
  if(actu_scroll_actuel == actu_scroll_nb_message)
    actu_scroll_suivant = 0;
  else
    actu_scroll_suivant = actu_scroll_actuel+1;
  document.getElementById(actu_scroller_bas).innerHTML = actu_scroll_message[actu_scroll_suivant];
  actu_scroll_top = -10;
  if( document.getElementById )
    if( !bPause ) oTimeoutPause = setTimeout("actu_scroll_action()", actu_scroll_pause_seconde*1000)
}

function actu_scroll_action()
{
  oTimeoutPause = null;
  actu_scroll_top -= 1;
  document.getElementById(actu_scroller_haut).style.top = actu_scroll_top;
  document.getElementById(actu_scroller_bas).style.top = actu_scroll_top+actu_scroll_hauteur;
  if((actu_scroll_top+actu_scroll_hauteur) > -10) {
    oTimeoutScroll = setTimeout("actu_scroll_action()",30)
  } else {
    actu_scroll_stop();
    oTimeoutScroll = null;
  }
}
function actu_scroll_stop()
{
  actu_scroll_actuel = actu_scroll_suivant;
  if( !bPause ) actu_scroll_start()
}
function actu_scroll_pause()
{
  bPause = true;
  clearTimeout(oTimeoutPause);
  oTimeoutPause = null;
}
function actu_scroll_restart()
{
  bPause = false;
  if( oTimeoutScroll == null && oTimeoutPause==null ) 
    oTimeoutPause = setTimeout("actu_scroll_action()", actu_scroll_pause_seconde*1000);
}

function initActuScroll()
{
  if (ns4==false) {
    var idScroller1 = document.getElementById("actu_scroller_1");
    var idScroller2 = document.getElementById("actu_scroller_2");  
  
    var nbActu = actu_scroll_message.length;
    if( idScroller1 ) idScroller1.innerHTML = ( nbActu>0 ? actu_scroll_message[0] : "" );
    if( idScroller2 ) idScroller2.innerHTML = ( nbActu>1 ? actu_scroll_message[1] : ( nbActu>0 ? actu_scroll_message[0] : "" ));
  
    actu_scroll_mode =1;
    actu_scroll_actuel = 0;
  }
}
function onLoadAccueil()
{
  if( document.getElementById("actu_scroll_relativ") ) {
    initActuScroll();
    actu_scroll_start();
  }
}