Javascript error on page load in IE 8

I am getting below Javascript errors on page load on IE 8. It not only affects performance but also probably loading of other images is an issue. Below errors-

Note: I have replaced my actual domain name in the error log

Error # 1:

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; .NET4.0C; .NET4.0E; InfoPath.2)
Timestamp: Mon, 29 Jun 2015 16:01:28 UTC

Message: Object doesn’t support this property or method

Line: 2

Char: 2851

Code: 0

URI: http://www.domainname.com/wp-content/plugins/frizzly//assets/js/frizzly.min.js?fe62f5

Error # 2:

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; .NET4.0C; .NET4.0E; InfoPath.2)

Timestamp: Mon, 29 Jun 2015 16:04:25 UTC

Message: Object doesn’t support this property or method

Line: 648

Char: 5

Code: 0

URI: http://www.domainname.com/contact-us/

Error # 3:

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; .NET4.0C; .NET4.0E; InfoPath.2)

Timestamp: Mon, 29 Jun 2015 16:05:01 UTC

Message: Object doesn’t support this property or method

Line: 626

Char: 5

Code: 0

URI: http://www.domainname.com/

https://ww.wp.xz.cn/plugins/frizzly/