Top area adsense error in firefox

hello,
I added a bloc with adsense code, the 728x15 menu, to the top area, in ie it work as it should but in firefox I see this in the top area : < ! -- google_ad_client = "pub ......." .... . (on two lines) and then the adsense menu.
I tried the module adense and the result was the same.
any idea ?
Regards

Hello,

I have the same problem with AdSense in the header section. It works fine in IE, but in Firefox and Chrome it is displaying the javascript code.

If the AdSense block is moved to the footer section, it works well on all browsers, so it is related to the header section.

I think this is the same problem that happened to Garland some time ago, see this issue:
#102252: Garland shows script source in header

Adding this code to style.css worked for me:

#topbar script {
display: none;
}