not able to browse internet through wifi, but working fine with ethernet card

Question

Hi I think I can get help from this page...

I am using ubuntu 12.10, I am able to access internet through lan wire, my laptop is also able to search my home router(wifi) and is also properly connected and shown as "connected".

But I am not able to access internet through wlan.

eth0      Link encap:Ethernet  HWaddr 00:23:8b:08:6b:33  
      inet addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0
      inet6 addr: fe80::223:8bff:fe08:6b33/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:1546 errors:0 dropped:0 overruns:0 frame:0
      TX packets:479 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:210353 (210.3 KB)  TX bytes:42731 (42.7 KB)
      Interrupt:17 

eth1      Link encap:Ethernet  HWaddr 00:21:00:c9:e3:df  
      inet addr:192.168.0.103  Bcast:192.168.0.255  Mask:255.255.255.0
      inet6 addr: fe80::221:ff:fec9:e3df/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:4237 errors:5 dropped:0 overruns:0 frame:124699
      TX packets:4213 errors:13 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:4447180 (4.4 MB)  TX bytes:575316 (575.3 KB)
      Interrupt:19 

lo        Link encap:Local Loopback  
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:16436  Metric:1
      RX packets:59 errors:0 dropped:0 overruns:0 frame:0
      TX packets:59 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0 
      RX bytes:4500 (4.5 KB)  TX bytes:4500 (4.5 KB)

plz help