Left Custom Module, doesn't show up in Firefox Options

[KissMeGreenEyes2]

I've been reading through all the scripts here to find on that would add a left custom module using the look and feel setup without having to create an entire skin. I have xanga premium so I have the one custom module but I am wanting to add another one. Well, I found a script that works. However, the module doesn't show up when I view it in Firefox, which is my main browser. A friend of mine could see it, so I checked it in IE and it was there. This is the code I used (I placed it in the Webstats module):

<!-- begin code provided by createblog.com --><br /><br /><!-- begin code provided by createblog.com --><br /><script><br />titleContent = 'Title Here';<br />moduleContent = 'Module Content';<br />sub = subTitle.parentNode.parentNode.parentNode.parentNode.parentNode<br />sub.insertAdjacentHTML('beforeBegin','<table border="1" cellspacing="0" cellpadding="4" width="100%" class="left"><tr><th valign="top" align="left" class="left">' + titleContent + '</th></tr><tr><td valign="top" class="left">' + moduleContent)<br />sub.insertAdjacentHTML('beforeBegin','<BR>');<br /></script><br /><!-- end code provided by createblog.com --><br /><br /><!-- end code provided by createblog.com -->

Is there any way to get this to show up in Firefox or is there another script that will do that? I know some people might say, "Well just just IE." But IE is such a pain (images won't load, popups, cookies every two seconds, etc.) that I never use it. Plus I know a lot of people use Firefox and I want everyone to be able to see my module.

My xanga site is: http://www.xanga.com/livingbyfaith_heb111

Any help you can give me would be greatly appreciated. Thank you for your time.