Well this is my very first tab and I figured this out by ear. I got this song free 
with the 2009 sampler, Emo is Evil Emo is Awesome 2. ENJOY and please rate!

intro chords: B E G#m E
intro/main riff:

e|---------------------|
B|---------------------|
G|---------------------|
D|---------------------| x7  
A|-4-4h6--4---4-4h6-4--|
E|----------7----------|

on 8th time
e|---------------------|
B|---------------------|
G|---------------------|
D|---------------------|
A|-4-4h6-4---4-4h6-4---|
E|---------7---------7-|
 

Verse 1                         
B                                  E                     
The greatest visions from all your catalogues
G#m                          E
on token pictures and blurry photographs
B                               E                      
no ark to save those who didn?t last
G#m                  E
under water in your science labs 

Chorus 
*Main Riff on top of chords*
B              E
On top of the world
G#m                   E
you?re on top of the world

Verse 2
B                             E
So now just train my eyes and name our wars
G#m                           E          
the safe addiction and plastic autocrats
B                        E
arms been saved for the bitter ends
G#m                              E
you know we?re waiting for your skies to land

Chorus

Bridge 
B                   E
Now they?re by your side
G#m               B
now we?re on your side 

B                   E
Now they?re by your side
G#m               B
now we?re on your side

B E G#m E until end of song