This is a pretty rough transcription but I think I got 
it all:

oh....x4

purple haze all in my brain,
lately things don't seem the same
oh actin funny but i dont know why
won't you please excuse me while i kiss the sky

help me, help me, woah yeah

woah sweet child of mine
oh oh oh oh sweet child of mine

there's a lady who's sure all that glitters is gold
and she's buying a stairway to heaven.

breakin the law breakin the law
bum bum
breakin the lawbreakin the law

i wanna rock and roll all night and party every day
i want to rock and roll all night and party every day

cum on feel the noise, girls rock your boys
(walk this way she told me to talk this way she told me 
to
walk this way she told me to talk this way she told me 
to)
cum on feel the noise, girls rock your boys

ba da ba

riding on the rails of a crazy train (toot toot)
i'm riding on the rails of a crazy train

da da da dum dum (to the tune of iron man)

and now it's time for the breakdown

hello x4

with the lights out this is dangerous
here we are now, entertain us

for those about to rock (fire, boom) we salute you
for those about to rock (fire, pshkk) we salute you

we're not gonnna take it, no we ain't gonnna take it, 

for its a nice day for a white wedding

it's only teenage wastela-a-a-and
teenage wasteland