var aimgs = new Array("bt_present", "bt_infos", "bt_parcours");
var iimgs = new Array("bti_present", "bti_infos", "bti_parcours");
var arolls = new Array(), irolls = new Array();

function init_arolls(){
 for(i=0;i<aimgs.length;i++){
  arolls[2*i] = new Image();
  arolls[2*i].src = '/Noctilien/pages/images/' + aimgs[i] + '_off.jpg';
  arolls[2*i+1] = new Image();
  arolls[2*i+1].src = '/Noctilien/pages/images/' + aimgs[i] + '_on.jpg';
 }
}

function init_irolls(){
 for(i=0;i<iimgs.length;i++){
  irolls[2*i] = new Image();
  irolls[2*i].src = '/Noctilien/pages/images/' + iimgs[i] + '_off.jpg';
  irolls[2*i+1] = new Image();
  irolls[2*i+1].src = '/Noctilien/pages/images/' + iimgs[i] + '_on.jpg';
 }
}

function aroll(o, i, s){
 o.childNodes[0].src = arolls[2*i + s].src;
}

function iroll(o, i, s){
 o.childNodes[0].src = irolls[2*i + s].src;
}

function init_lngrolls(){
 pcol = new Array();
 pcol[0] = document.getElementById("lignesl").getElementsByTagName("P");
 pcol[1] = document.getElementById("lignesr").getElementsByTagName("P");
 for(j=0;j<pcol.length;j++){
 for(i=0;i<pcol[j].length;i++){
  pcol[j][i].refc = pcol[j][i].className;
  if(pcol[j][i].refc=='rechcomm')
   continue;
  if(pcol[j][i].parentNode.tagName=='LI')
   continue;
  if(pcol[j][i].refc=='')
   pcol[j][i].refc = 'off';
  aelem = pcol[j][i].getElementsByTagName("A")[0];
  aelem.prt = pcol[j][i];
  aelem.onmouseover = function(){
   this.prt.className = 'on';
  }
  aelem.onmouseout = function(){
   this.prt.className = this.prt.refc;
  }
 }
 }
}