Sorry the url is

$base_url = 'http://search.justdial.com/srch/search_cwa.php?srch=true&
+city=Chennai%20result=&city=&searchtype=Multicuisine+Restaurants&resu
+ltType=&area=&new_area=&Stype=category&choices=&intermid=true&docId=&
+smsAlert=&emailAlert=&NameAlert=&sinfo=&smsDetail=&img=&img_check=&se
+eAlso=&sms_visible=&sms_button=&Lowcat=&lowest=&return_page=&magic_mo
+bile=&magic_email=&magic_sinfo=&magic_Detail=&magic_seeAlso=&magic_na
+me=&magic_tel=&login_name=&login_pass=&login_name_review=&login_pass_
+review=&img_forget=&screen_name=&login_name1=&login_pass1=&comp=&cid=
+&review_div=&ADVSEARCH=&city=Chennai&txtname=&txtadd=&Street=&area=&P
+in=&txt_company=&txtphone=&jdG=&search_type_string_company=&search_ty
+pe_string=';
[download]

Header looks like this

http://search.justdial.com/srch/search_cwa.php?srch=ture&city=Chennai

POST /srch/search_cwa.php?srch=ture&city=Chennai HTTP/1.1
Host: search.justdial.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.6
+) Gecko/20100625 Firefox/3.6.6
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.
+8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://search.justdial.com/srch/search_cwa.php?srch=true&city
+=Chennai%20result=&city=&searchtype=Multicuisine+Restaurants&resultTy
+pe=&area=&new_area=&Stype=category&choices=&intermid=true&docId=&smsA
+lert=&emailAlert=&NameAlert=&sinfo=&smsDetail=&img=&img_check=&seeAls
+o=&sms_visible=&sms_button=&Lowcat=&lowest=&return_page=&magic_mobile
+=&magic_email=&magic_sinfo=&magic_Detail=&magic_seeAlso=&magic_name=&
+magic_tel=&login_name=&login_pass=&login_name_review=&login_pass_revi
+ew=&img_forget=&screen_name=&login_name1=&login_pass1=&comp=&cid=&rev
+iew_div=&ADVSEARCH=&city=Chennai&txtname=&txtadd=&Street=&area=&Pin=&
+txt_company=&txtphone=&jdG=&search_type_string_company=&search_type_s
+tring=
Cookie: __utma=98395136.816878539.1277791627.1277873550.1277877109.5; 
+__utmz=98395136.1277877109.5.2.utmcsr=search.justdial.com|utmccn=(ref
+erral)|utmcmd=referral|utmcct=/; CITY=Chennai; PHPSESSID=987c70fa00fe
+82b9c7c1ca9add436cf0; __utmc=98395136; __utmb=98395136.22.10.12778771
+09; showFlash=1
Content-Type: application/x-www-form-urlencoded
Content-Length: 141
city=Chennai&searchtype=51778%2C314625%2C310563%2C310549%2C310573%23%2
+3Multicuisine+Restaurants&area=&Stype=category&intermid=true&proximit
+y=
HTTP/1.1 200 OK
Date: Wed, 30 Jun 2010 06:24:23 GMT
Server: Apache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: private, max-age=10800, pre-check=10800
Last-Modified: Thu, 27 May 2010 16:44:24 GMT
Keep-Alive: timeout=2, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html
----------------------------------------------------------
http://search.justdial.com/srch/Code_srch/security-image.php

GET /srch/Code_srch/security-image.php HTTP/1.1
Host: search.justdial.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.6
+) Gecko/20100625 Firefox/3.6.6
Accept: image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://search.justdial.com/srch/search_cwa.php?srch=ture&city
+=Chennai
Cookie: __utma=98395136.816878539.1277791627.1277873550.1277877109.5; 
+__utmz=98395136.1277877109.5.2.utmcsr=search.justdial.com|utmccn=(ref
+erral)|utmcmd=referral|utmcct=/; CITY=Chennai; PHPSESSID=987c70fa00fe
+82b9c7c1ca9add436cf0; __utmc=98395136; __utmb=98395136.22.10.12778771
+09; showFlash=1

HTTP/1.1 200 OK
Date: Wed, 30 Jun 2010 06:24:27 GMT
Server: Apache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-
+check=0
Pragma: no-cache
Content-Length: 841
Keep-Alive: timeout=2, max=100
Connection: Keep-Alive
Content-Type: image/gif
----------------------------------------------------------
http://www.google-analytics.com/__utm.gif?utmwv=4.7.2&utmn=730282458&u
+tmhn=search.justdial.com&utmcs=ISO-8859-1&utmsr=1360x768&utmsc=24-bit
+&utmul=en-us&utmje=1&utmfl=10.0%20r45&utmdt=Just%20Dial%20-%20India%2
+7s%20No.1%20local%20search%20engine&utmhid=26967521&utmr=0&utmp=%2Fsr
+ch%2Fsearch_cwa.php%3Fsrch%3Dture%26city%3DChennai&utmac=UA-1220997-2
+&utmcc=__utma%3D98395136.816878539.1277791627.1277873550.1277877109.5
+%3B%2B__utmz%3D98395136.1277877109.5.2.utmcsr%3Dsearch.justdial.com%7
+Cutmccn%3D(referral)%7Cutmcmd%3Dreferral%7Cutmcct%3D%2F%3B

GET /__utm.gif?utmwv=4.7.2&utmn=730282458&utmhn=search.justdial.com&ut
+mcs=ISO-8859-1&utmsr=1360x768&utmsc=24-bit&utmul=en-us&utmje=1&utmfl=
+10.0%20r45&utmdt=Just%20Dial%20-%20India%27s%20No.1%20local%20search%
+20engine&utmhid=26967521&utmr=0&utmp=%2Fsrch%2Fsearch_cwa.php%3Fsrch%
+3Dture%26city%3DChennai&utmac=UA-1220997-2&utmcc=__utma%3D98395136.81
+6878539.1277791627.1277873550.1277877109.5%3B%2B__utmz%3D98395136.127
+7877109.5.2.utmcsr%3Dsearch.justdial.com%7Cutmccn%3D(referral)%7Cutmc
+md%3Dreferral%7Cutmcct%3D%2F%3B HTTP/1.1
Host: www.google-analytics.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.6
+) Gecko/20100625 Firefox/3.6.6
Accept: image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://search.justdial.com/srch/search_cwa.php?srch=ture&city
+=Chennai

HTTP/1.1 200 OK
Date: Tue, 29 Jun 2010 21:04:01 GMT
Content-Length: 35
Pragma: no-cache
Expires: Wed, 19 Apr 2000 11:43:00 GMT
Last-Modified: Wed, 21 Jan 2004 19:51:30 GMT
Content-Type: image/gif
Server: Golfe
Cache-Control: private, no-cache, no-cache=Set-Cookie, proxy-revalidat
+e
----------------------------------------------------------
[download]