How Do I get my sidebar ads to follow me when i scroll up/down the page?

[tamir_sha]

Your Blogs URL: likefeed.blogspot.com
Browser(s) used: Internet Explorer 8
Location: ?

How Do I get my sidebar ads to follow me when i scroll up/down the page?
Its not violates the AdSense TOS. does it?

As you can see, my blog have two 160x600 ads on is sidebars, one ad in each sidebar.

I placed those ads with the assistance of the HTML widget - I not so good in the HTML language (or any other programming language).

Therefore I want you to be detailed, tnx

Here is the code i placed on the HTML widget, what i sould change in it, to get it done?

<div style="margin: 15px -40px auto -40px;">
<center>
The AdSense Code
</center>
</div>

[tamir_sha]

Someone plz?

[Nathan]

To get ads to follow you it takes JavaScript code. I did it a while back. I don't think I have the code on me anymore, but it required getting the location of the vertical scroll bar and then using it to move the top coordinate of the absolutely positioned ad within a relative container.

[RabidReptile]

I believe this should work:

<div style="margin: 15px -40px auto -40px; position: fixed">
<center>
The AdSense Code
</center>
</div>