Hover Opacity Blogbody, It suddenly broke, literally... Options

[Atkascha]

Hi, I am usually able to find answers to most of my troubleshooting here. I've put together my xanga with many scripts found here and everything seemed to be in order. Just a few days ago, last Wednesday to be exact, my blogbody is using a hover opacity script which worked previously until that day. There was no additional scripts added during that time. This is the current script I am using:

<!-- start code provided by createblog.com -->
<script language="javascript">
//Sets blog opacity (0-100)
opcty = 10;

//Sets rollover opacity
msvropcty = 100;

////////////////////////////////////

tables = document.getElementsByTagName('table');

for(var j=0;j<tables.length;j++){

if(tables[j].className == "blogbody"){

tables[j].style.filter = "alpha(opacity=" + opcty + ")";
tables[j].onmouseover = function(){this.style.filter = "alpha(opacity=" + msvropcty + ")";}
tables[j].onmouseout = function(){this.style.filter = "alpha(opacity=" + opcty + ")";}

}

}

//--></script>
<!-- end code provided by createblog.com -->

I am using the same script for my left columns and that seems to be working fine. It's just the blogbody that doesn't work. Any ideas is much appreciated! Thanks in advance.