Transparent code for blog Options

[predisp0siti0n]

i put this code in

<!-- begin code provided by createblog.com --><br /><style type="text/css"><br />table.blogbody {<br />border: 1px dashed #000000;<br />background-color: #000000;<br />filter: alpha(opacity=70);<br />width:600px;<br />}<br /></style><br /><!-- end code provided by createblog.com -->

and thats basically what i want except i want it to be semi transparent enough so i can see the background on my site, but still be able to read the white text when you scroll over it, what is the code for that?

My Webpage

[predisp0siti0n]

aaah that sucks lol and there is no remedy to this or different code with the same effect?

i basically want to put a tinted box behind the text and pictures and when i looked at it in IE that code made everything in the box clear too, i just want a tinted black box behind my text so i can see my text a pictures i post but also the background