having issue with my wordpress site

[Sidra]

Hello,

can anyone help me solving to this issue,

i have wordpress http://www.prayfornathan.org/blog site working fine
everywhere but in IE 8 giving error of Stack overflow on almost every
page click

error is

"Stack overflow at line:1715"

this error occurs in a error dialog box

i got error detail using developer tool

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; HPNTDF; InfoPath.3; .NET4.0C; BRI/2)
Timestamp: Wed, 13 Apr 2011 20:18:28 UTC


Message: Object doesn't support this property or method
Line: 4835
Char: 5
Code: 0
URI: http://www.prayfornathan.org/blog/wp-includes/js/prototype.js?ver=1.6.1


tried many things like try to change the them also check to activate
or deactivate some plugin but still getting error

if someone can help me i will be very thankful to him