Revert "Try supporting IE<=8 a bit by adding some attachEvent"
Revert "Try supporting IE<=8 a bit by adding some attachEvent"

This reverts commit 2983db7a2525d9ab35b8caa7c5282b1e740181b2.

hallvors/testharness.js,jyasskin/testharness.js,zqzhang/testharness.js,hallvors/testharness.js,ayg/testharness.js,jyasskin/testharness.js,RatneshThakur/testharness.js,bboyle/testharness.js