@namespace url(http://www.w3.org/1999/xhtml);

img, *[class*="SPRITE"],.print-page { opacity : .5 !important} 
img:hover{ opacity : 1 !important} 

div.icon, span.icon, .toggle, .autoPagerS  * img, .doclist-star, .doclist-icon, .treedoclistview-node-icon, .big-retweet-icon, .lock-icon,
div[bginactive*="flash"], input[type="image"], [id*="lastFewSeats"]  
{ opacity : .25 !important}

.external, [class*="Slider"] { opacity: .6 !important;}

#speaker  { opacity : .5 !important}