Alternating background colors for comments, Problems with alternating color code Options

[heidz86]

I have inserted code into my xanga website on alternating background colours for my comments. The code has also made a background colour for my entry which I don't want and wondered if there was a way I could correct this in the code.

This is the code I use, could you please help me and see if there is anything wrong with it

<!-- begin code provided by createblog.com --><br /><script language="javascript">/*colorComments by Sean F<br />http://www.xanga.com/seanmeister this script will display your reader comments<br />in alternating background colors. Paste the code into the Website Stats section of your Xanga Look & Feel settings. Change the values of bg1 and bg2 to customize.<br />*/ function colorComments(){var bg1="#949494";var bg2="#DCDCDC";var sw=0; var attname = document.all ? "class"+"Name" : "class"; var ctables = document.getElementsByTagName("table"); for (var cn=0; cn < ctables.length; cn++){if (ctables[cn].getAttribute(attname) == "blogbody"){ sw = sw == 1 ? 0 : 1; ctables[cn].style.backgroundColor = sw == 1 ? bg1 : bg2; }}} if (document.location.href.indexOf("item.aspx") != -1) colorComments();<br /></script><br /><!-- end code provided by createblog.com -->

Thankyou. A link to my website once on the commenting page, so you can see it yourself is as follows: heidz86 xanga site

Thankyou I would appreciate any help.