أريد أن أضيف أكثر من أستايل في منتداي

var type = getCookie('template1');
var temsel = document.getElementById('temsel');
temsel.innerHTML
 ='<select
onchange="changeskin(this.options[this.selectedIndex].value);window.location.reload();"><option>أختر
 التصميم الذي تريد ان تعاين به المنتدى</option><option
value="valeur1">التصميم 1</option><option
value="valeur2">التصميم 2</option><option
value="valeur3">التصميم 3</option><option
value="valeur5">التصميم 4</option></select>';
 
 
 
 
if (type == 'valeur1')
{
  document.write('<link rel="stylesheet" type="text/css" href="http://aaltahere.forumarabia.com/170891-rtl.css">');
}
else if (type == 'valeur2')
{
  document.write('<link rel="stylesheet" type="text/css" href="http://aaltahere.forumarabia.com/149809-rtl.css">');
}
else if (type == 'valeur3')
{
  document.write('<link rel="stylesheet" type="text/css" href="http://aaltahere.forumarabia.com/165548-rtl.css">');
}
else if (type == 'valeur4')
{
  document.write('<link rel="stylesheet" type="text/css" href="http://aaltahere.forumarabia.com/156339-rtl.css">');
}
else if (type == 'valeur5')
{
  document.write('<link rel="stylesheet" type="text/css" href="http://forum_url/xxxxxx-rtl.css">');
}
 
function changeskin(change) {
  var scheme = change;
  var name = 'template1';
  var pathname = location.pathname;
  //var myDomain = pathname.substring(0,pathname.lastIndexOf('/')) +'/';
  var ExpDate = new Date ();
  ExpDate.setTime(ExpDate.getTime() + (180 * 24 * 3600 * 1000));
  setCookie(name,scheme,ExpDate,'/');
}
function getCookie(name){
  var cname = name + "=";
  var dc = document·cookie;
  if (dc.length > 0) {
      begin = dc.indexOf(cname);
      if (begin != -1) {
        begin += cname.length;
        end = dc.indexOf(";", begin);
        if (end == -1) end = dc.length;
        return unescape(dc.substring(begin, end));
      }
  }
  return null;
}
function setCookie(name, value, expires, path, domain, secure) {
  document·cookie = name + "=" + escape(value) +
  ((expires == null) ? "" : "; expires=" + expires.toGMTString()) +
  ((path == null) ? "" : "; path=" + path) +
  ((domain == null) ? "" : "; domain=" + domain) +
  ((secure == null) ? "" : "; secure");
}

<span id="temsel"></span><script type="text/javascript" src="رابط الصفحة"></script>

var type = getCookie('template1');
var temsel = document.getElementById('temsel');
temsel.innerHTML ='<select onchange="changeskin(this.options[this.selectedIndex].value);window.location.reload();"><option>أختر التصميم الذي تريد ان تعاين به المنتدى</option><option value="valeur1">التصميم 1</option><option value="valeur2">التصميم 2</option><option value="valeur3">التصميم 3</option><option value="valeur5">التصميم 4</option></select>';




if (type == 'valeur1')
{
    document.write('<link rel="stylesheet" type="text/css"http://aaltahere.forumarabia.com/170891-rtl.css">');
}
else if (type == 'valeur2')
{
    document.write('<link rel="stylesheet" type="text/css" href="http://aaltahere.forumarabia.com/149809-rtl.css">');
}
else if (type == 'valeur3')
{
    document.write('<link rel="stylesheet" type="text/css" href="http://aaltahere.forumarabia.com/165548-rtl.css">');
}
else if (type == 'valeur4')
{
    document.write('<link rel="stylesheet" type="text/css" href="http://aaltahere.forumarabia.com/156339-rtl.css">');
}
else if (type == 'valeur5')
{
    document.write('<link rel="stylesheet" type="text/css" href="http://forum_url/xxxxxx-rtl.css">');
}

function changeskin(change) {
    var scheme = change;
    var name = 'template1';
    var pathname = location.pathname;
    //var myDomain = pathname.substring(0,pathname.lastIndexOf('/')) +'/';
    var ExpDate = new Date ();
    ExpDate.setTime(ExpDate.getTime() + (180 * 24 * 3600 * 1000));
    setCookie(name,scheme,ExpDate,'/');
}
function getCookie(name){
    var cname = name + "=";
    var dc = document·cookie;
    if (dc.length > 0) {
        begin = dc.indexOf(cname);
        if (begin != -1) {
            begin += cname.length;
            end = dc.indexOf(";", begin);
            if (end == -1) end = dc.length;
            return unescape(dc.substring(begin, end));
        }
    }
    return null;
}
function setCookie(name, value, expires, path, domain, secure) {
    document·cookie = name + "=" + escape(value) +
    ((expires == null) ? "" : "; expires=" + expires.toGMTString()) +
    ((path == null) ? "" : "; path=" + path) +
    ((domain == null) ? "" : "; domain=" + domain) +
    ((secure == null) ? "" : "; secure");
}