FILTER tag, having problems... Options

[urcompsezwazzup]

uhh i know this has probably been asked before, and actually i think ive seen teh question...i just dont remember where
anyway, i tried to use the FILTER code to make my blogs opaque right, and now when i hover over a link, almost always a part of one of my blogbody's kinda...disappears. i cant really think why. this is the code i used...

CODE

<!-- begin code provided by createblog.com -->
.blogbody { border: 2px solid #666666; border-left: 3px solid #666666; border-style: groove; line-height: 88%; FILTER: alpha(opacity=70);
<!-- end code provided by createblog.com -->

everything works...its just that one bug anyone know why/how to fix this:

thanx in advance!
-aMiT-