var previewtitles = new Array(2); 
previewtitles[0] = new Array(5);
previewtitles[1] = new Array(5);
previewtitles[0][0] = 'Who we are';
previewtitles[0][1] = 'Who we are';
previewtitles[0][2] = 'Who we are';
previewtitles[0][3] = 'Who we are';

previewtitles[1][0] = '';
previewtitles[1][1] = '';
previewtitles[1][2] = '';
previewtitles[1][3] = '';
previewtitles[1][4] = '';

var pause = 4000; // aika sivun vaihtumiseen millisekunneissa

var preview_now = 1;
var preview_nowr = 5;
//var t = setTimeout("nextPreview()", pause);
var t = setInterval("nextPreview()", pause);
    
function nextPreview() {
 preview_now++;
 if(preview_now > 4) {//previewtitles[lang].length) {
  preview_now = 1;
 }
 setPreview(preview_now);
}
    
function setPreview(id) {
 preview_now = id;
 showPreview_left(id);
 clearInterval(t);
 t = setInterval("nextPreview()", pause);
 //clearTimeout(t);
 //t = setTimeout("nextPreview()", pause); 
}

function setPreviewr(idr) {
 showPreview_right(idr);
}

function showPreview_left(id) {
 for(var i=0;i<previewtitles[lang].length;i++) {
  if(i+1 == id) { // show this
   document.getElementById('preview_title').innerHTML = previewtitles[0][i];
   document.getElementById('preview_link'+(i+1)).className = 'active';
   document.getElementById('preview'+(i+1)).className = 'preview_box areabg';
  } else { // hide these
   document.getElementById('preview_link'+(i+1)).className = ''; 
   document.getElementById('preview'+(i+1)).className = 'preview_box_hidden areabg'; 
  } 
 }
}

function showPreview_right(idr) {
 for(var i=4;i<9;i++) {
  if(i+1 == idr) { // show this
   document.getElementById('preview_title_right').innerHTML = previewtitles[1][i-4];;
   document.getElementById('previewr_link'+(i+1)).className = 'active';
   document.getElementById('previewr'+(i+1)).className = 'content_text areabg';
  } else { // hide these
   document.getElementById('previewr_link'+(i+1)).className = ''; 
   document.getElementById('previewr'+(i+1)).className = 'preview_box_hidden areabg'; 
  } 
 }
}