Layout problem with IE7

[Alhazred]

I'm creating a myspace, I've added a different layout instead of the standard one, the problem is that with this layout IE7 has a constant CPU usage of 100% and it makes the slideshows visualization really slow.
At first I thought it was due to a large amount of images, so I reduced them passing from 150 pics for a total of 25MB to 80 pics for a total of 4.8MB, but nothing changed. Today I have done a try removing my layout and using the standard one (no other changes), IE7 has a CPU usage under 40% and the slideshow has the correct speed.

I attach the layout code here, do you see anything that could cause such a behavior in IE7?

<style>
body.bodyContent {
background-color: rgb(0, 0, 0);
background-image: url(http://img178.imageshack.us/img178/6079/dragon3ro9.jpg);
background-position: top left;
background-repeat: repeat;
background-attachment: fixed;
}
table, tr, td {
background-color: transparent;
border: 1px;
}

table table {
border: 1px;
}
table table table table{
border: 1px;
}
table table table {
border-width: 1px;
border-color: rgb(255, 255, 0);
border-style: dashed;
background-color: rgb(0, 0, 0);
}
table table,table table table table,table table table td {
filter:alpha(100);
-moz-opacity: 1;
opacity: 1;
-khtml-opacity: 1;
}
table table table table td {
filter:none;
}

General,body,div,p,strong,td,textarea,input,.text,span.redtext,span.redbtext,span.blacktext10,span.blacktext12 {
font-family: Verdana;
font-size: 12px;
color: rgb(255, 255, 0);
font-weight: bold;
font-style: normal;
text-decoration: none;
}
.nametext {
padding: 5px;
font-family: Georgia;
font-size: 20px;
color: rgb(255, 255, 0);
font-weight: bold;
font-style: italic;
text-decoration: none;
display: block;
}
.whitetext12, .orangetext15 {
font-family: Verdana;
font-size: 12px;
color: rgb(255, 255, 0);
font-weight: normal;
font-style: normal;
text-decoration: none;
}
AllLinksNormal,a,a:link,a:visited,a.man,a.man:link,a.man:visited,a.navbar,a.navbar:link,a.navbar:visited,a.redlink,a.redlink:link,a.redlink:visited,a.searchlinkSmall,a.searchlinkSmall:link,a.searchlinkSmall:visited,a:hover,a:active,a.man:hover,a.man:active,a.navbar:hover,a.navbar:active,a.redlink:hover,a.redlink:active,a.searchlinkSmall:hover,a.searchlinkSmall:active {
color: rgb(255, 255, 255);
font-weight: bold;
font-style: normal;
text-decoration: none;
}
AllLinksHover,a:hover,a:active,a.man:hover,a.man:active,a.navbar:hover,a.navbar:active,a.redlink:hover,a.redlink:active,a.searchlinkSmall:hover,a.searchlinkSmall:active {
color: rgb(255, 0, 0);
font-weight: bold;
font-style: normal;
text-decoration: underline;
}
.badge {
position: absolute;
left: 1px;
top: 1px;
}

</style>

[PeejAvery]

CSS/HTML will not affect the processor to that extent. They will take a little while loading, but then return to normal.

What form of Flash content do you have on your page? JavaScripts? Those will be what affect the processor.

[Alhazred]

I thought the same as you, but the problem disappears only if I remove that code. I've tried reducing the numbers of slideshows from 4 with 150 pics to 1 with 15pics and removing all the 3 youtube videoclips but nothing to do, the slideshow is slow anyway.
There are lots of myspaces with more than 2 slideshows and lots of youtube videoclips that have no problems. I've tried with Firefox and it has no problem even with the 4 slideshows with 150 pics and the 3 videoclips with that layout, but it slows down as IE7 if I add a transparency to the tables.
That's why I think the problem is in that code.

Slideshows code is like this

<object type="application/x-shockwave-flash" allowScriptAccess="never" allowNetworking="all" height="320" width="426" data="http://lads.myspace.com/slides/slideshow_random.swf?u=353299817&aid=111474">
<param name="allowScriptAccess" value="never" />
<param name="allowNetworking" value="all" />
<param name="movie" value="http://lads.myspace.com/slides/slideshow_random.swf?u=353299817&aid=111474" />
<param name="flashvars" value="culture=it-IT" />
<param name="wmode" value="transparent" />
</object>

[PeejAvery]

Is that <object> tag the code generated by Myspace? Or did you make it yourself?

[Alhazred]

The code for the slideshow is generated by myspace, I had just to copy and paste it.

[PeejAvery]

So, IE doesn't like transparency with the Flash. Instead of using transparency in the tables, why don't you use a semi-transparent PNG as the background to the tables?

[Alhazred]

It seem we are on the same wavelength...
I was here now to write my solution and I see your suggestion that is the same.
I've just put a black png with 93% of opacity and it works.