search issue in curl

[anusanker]

Hi,

I am trying to get search result("Reg.nr:" field on the left menu) from this site, using curl method

Site Url: http://nbk2.autodata.no/

To get the search result actually the user need to login with the site, the login is working properly with the curl function.
The actual problem is that I tried passing the parameters through url like the same way as in the actual site but unfortunately
I am not getting the result, like in the actual site.

Following is the code for login and search, that I had used for this.And I also placed the login username password and also the search text(in the search
function url)in the code, could you please check it and let me know.

/* code to login to the site*/

$loginurl = "http://www.norskbildelkatalog.no/default.aspx?cat=2&Id=18";
        $userName = "vwx7a";                //value of username
        $userPwd = "smwhe";                                //value of password field       
        $loginButton = "";                                //value of login button
        $userfieldname = "ctl00%24tbUserName";            //name of the field username
        $passfieldname = "ctl00%24tbPassword";            //name of the field password
        $buttonName = "ctl00%24btnLogin";                 //name of the submit button
        //$spiderId = $LoginDetails['idSpiders'];            //end values
        $link = "Startsiden";                                                           
        $cookie_file_path = "cook.txt";
        $agent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7";
        $reffer = "http://www.norskbildelkatalog.no";
    $baseUrl = "http://nbk2.autodata.no";

    $ch = curl_init('http://www.norskbildelkatalog.no/default.aspx?cat=2&Id=18');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);
    $password = '&' .$passfieldname.'=';
    curl_setopt($ch, CURLOPT_POSTFIELDS, $userfieldname.'='. $userName . $password. $userPwd . '&'.$buttonName.'='. $loginButton.'&'.'__VIEWSTATE=%2FwEPDwULLTE2OTYxMTQyOTJkZKnDWEWkr2o2KzEZL%2FUtwkVYytbh&__EVENTVALIDATION=%2FwEWBAKCiZ7KBAL06sf%2FAQK%2F0oqcCQLnrI%2BZD94ytl4m3yVK2AjSmUM%2FlJpk24m3&');
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);// allow redirects
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 6.1; ru; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5');


    curl_setopt($ch, CURLOPT_COOKIEJAR, './cook.txt');
    curl_setopt($ch, CURLOPT_COOKIEFILE, './cook.txt');
    $result = curl_exec($ch);

     //parse the html into a DOMDocument
            $dom = new DOMDocument();
            @$dom->loadHTML($result);

            // grab all the on the page
            $xpath = new DOMXPath($dom);
            $hrefs = $xpath->query('/html/body//a');

            for ($i = 0; $i < $hrefs->length; $i++) {
                $href = $hrefs->item($i);
                $url = $href->getAttribute('href');
                $t = $href->nodeValue;
                if(trim($t) != ""){
                    $arr[$i.$t] =  $url;

                }
                //here we get the url and link value from the link name
                if($t == $linkn){
                        echo $searchUrl = $baseUrl.$url;
                        echo $searchRes =     Search($searchUrl);
                        exit;
                }

            }   

/* code to search in the site*/           

function Search($baseurl){


        $loginurl = $baseurl;
        $link = "VW";                                                           
        $cookie_file_path = "/cook.txt";
        $agent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7";
        $reffer = $baseurl;

                    $POSTFIELDS = 'tp_articlesearch_pnl_search_vehicle_criterion=1&tp_articlesearch%24input_search_single=AA52844&tp_articlesearch%24btn_search_single=tp_articlesearch_btn_search_single&__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=%2FwEPDwUJOTEyNTM2NDY2ZGReJw3PG62XkgM7gYqdrdP%2B0zHxDQ%3D%3D&username=vwx7a&password=smwhe&login=Send&__PREVIOUSPAGE=oL0kSGhtXbLqdHQg0uFgqg2';
                    $ch = curl_init();
                    curl_setopt($ch, CURLOPT_URL,$loginurl);
                    curl_setopt($ch, CURLOPT_USERAGENT, $agent);
                    curl_setopt($ch, CURLOPT_POST, 1);
                    curl_setopt($ch, CURLOPT_POSTFIELDS,$POSTFIELDS);
                    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
                    curl_setopt($ch, CURLOPT_REFERER, $reffer);
                    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file_path);
                    curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path);

                    $result = curl_exec ($ch);

                     return $result;
                    curl_close ($ch);
        }
        /* Search end here */    

YOu can see this sample code in the url: http://autobutler.no/test123.php