Hi to all,

when I open an article which contains 'gallery' tags within my IE8 browser, the page is displayed normally, but I have the yellow exclamation mark in the lower left corner which says:

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Creative AutoUpdate v1.40.01)
Timestamp: Wed, 13 Jan 2010 10:25:37 UTC

Message: 'href' is null or not an object
Line: 89
Char: 1869
Code: 0
URI: wincert.net/media/system/js/mootools.js

Message: Object doesn't support this property or method
Line: 59
Char: 102
Code: 0
URI: wincert.net/media/system/js/mootools.js

Message: Object doesn't support this property or method
Line: 8
Char: 186
Code: 0
URI: wincert.net/media/system/js/mootools.js

Visit the sample page:
www.wincert.net/news/hardware/1878-sennheiser-rs-160-wireless-headphones.html

Every other articles which doesn't contain 'gallery' tags have no errors.
I am using latest stable version of Joomla v1.5.15 and Simple Image Gallery Pro v2.0.4
Any ideas?

Did you try use another pop up engine?

Haven't tried it yet, will do.
But, isn't this a bug of the default pop-up engine?

No, it is probably a conflict.