The yellow triangle you refer to means the page has a javascript error. An error in the webpage is not your fault, it is the fault of the person who created the page.

A javascript error is nothing for you to worry about unless:

1. It's your website
2. It breaks functionality in a way that prevents you from using the site.

Let's be blunt here: If you don't know what tgreer means by "browser", you are in no position to even consider fixing a javascript code error. I also have to make the assumption that if you don't know what "browser" means or how to post a simple link to the website in question, you must not be the webmaster of the website you refer to, so my advice to you is either don't worry about the error or contact the website owner and tell him/her about the error.