Standard Tuning

Intro and chorus:
-|------------------------------|-------------------------------|--
-|------------------------------|-------------------------------|--
-|------------------------------|-------------------------------|--
-|----------------------3h4p3h4-|-------------------------------|--
-|--3h5--3h5--3h5--3h5----------|--3h5--3h5--3h5--3-------------|--
-|------------------------------|--------------------5--3--1/2--|--
                                                                              

Main rhythm riff during the verse:
-|--4/5--5-5-5-x-x-5-5-x-x-x-5--5/7-7-7-7-x-x-5--5-x-x-x-4-|-- 
-|--4/5--5-5-5-x-x-5-5-x-x-x-5--5/7-7-7-7-x-x-5--5-x-x-x-4-|--
-|--4/5--5-5-5-x-x-5-5-x-x-x-5--5/7-7-7-7-x-x-5--5-x-x-x-4-|--
-|---------------------------------------------------------|--
-|---------------------------------------------------------|--
-|---------------------------------------------------------|--
                                                                              

Later in the song, Rob shouts "drop it" 
and Travis plays this quick little riff:
-|---------------------------------------|--
-|---------------------------------------|--
-|---------------------------------------|--    play 2x
-|---------------------------------------|--
-|--3-5-5--3-5-5--3-5-5--3-5-5--3-5-5-5--|--
-|---------------------------------------|--
                                                                              
right after the last riff, travis plays 
this riff with a phaser or flanger effect, 
then drops the effects and keeps 
playing the riff while Rob sings

-|-----------------------------|--
-|-----------------------------|--
-|-----------------------------|--      Play 5x and then...
-|-----------------------------|--
-|-----------3--5--5---5-3-----|--
-|---5--5--5---------------4---|--

...add this variation to the riff:
-|------------------------------|--
-|------------------------------|--
-|------------------------------|--
-|------------7--5--------------|--
-|----------3-------7------3h5--|--
-|--5--5--5------------5--------|--

that's pretty much it.
everything else is just repeated riffs and rhythm parts which are tabbed out for you above. Have fun.