problem with my blog Options

[azn_swe3ti]

I put this transparent background behind my blog and some times it just suddenly half of it disappear and you can't see anything in the blog except the parts that didnt disappear. Or sometimes if i scroll down and stop for a few seconds and go back up, more than half of all the blogs just dissapear until i refresh. I don't know if it's because of my computer or the code. Can someone help me check it? Thanks.

My Xanga

Here's the code:

<!-- begin code provided by createblog.com --><br /><!-- begin code provided by createblog.com --><br /><STYLE><br />/*<br />transparent blog<br />*/<br /><br />.blogbody, {<br /><br /><br />/* opacity maximum 100 */<br />filter: alpha(style=0,opacity=60);<br />}<br /></STYLE> <br /><!-- end code provided by createblog.com --><!-- begin code provided by createblog.com --><br /><style type="text/css"><br />/*<br />Blog Background Color <br />*/<br /><br />.blogbody {background-color: ffffff;};<br /></style><br /><!-- end code provided by createblog.com --><br /><!-- end code provided by createblog.com -->