Improves the 4chan image boards in many ways.
Removes ads
removes help text
changes font to Trebuchet MS
rounded corners on thread replies
fixed position post area that scrolls with the page (mouseover opacity)
fixes blurry thumbnails in fx3

To remove the post area position style remove this block of text:

/* post area (remove this if you want the default post box, the one on top)*/
input,textarea{margin-right:2px !important;}
textarea{height:300px !important;}
div.postarea{position:fixed !important;width:472px !important;height:0px !important;opacity:0.3 !important;right:0px !important;}
div.postarea:hover{opacity:1 !important;}
td.postblock{vertical-align:top !important;font-size:10px !important;}
/* stop removing here */