
A belief beyond suffering
What if it has been an ash
Might I hold it to death
As an one for ever
If we use document.body.clientWidth directly like
a.left = (document.body.clientWidth - 800) /2
the result showed on browsers except IE (FF, Safari, Opera, Chrome) would be incorrect with no reason.
We need to use syntax like this
var cw = document.body.clientWidth;
a.left = (cw-800)/2;
and all browsers love it!
....Orz