Use this extension to block ads -> '''Adblock Plus 2.0.3''' * https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/ * Subscribe to its Filter lists: ** http://adblockplus.org/en/getting_started ** http://adblockplus.org/en/subscriptions Check and tell if its working.

Reset the page zoom on pages that cause problems. *<b>View > Zoom > Reset</b> (Ctrl+0 (zero); Cmd+0 on Mac) *http://kb.mozillazine.org/Zoom_text_of_web_pages Clear the cache and the cookies from sites that cause problems. "Clear the Cache": *Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now" "Remove Cookies" from sites causing problems: *Tools > Options > Privacy > Cookies: "Show Cookies" *http://kb.mozillazine.org/Websites_look_wrong ---- Do a malware check with some malware scanning programs on the Windows computer.<br /> You need to scan with all programs because each program detects different malware.<br /> Make sure that you update each program to get the latest version of their databases before doing a scan.<br /><br /> *http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware *http://www.superantispyware.com/ - SuperAntispyware *http://www.microsoft.com/security/scanner/en-us/default.aspx - Microsoft Safety Scanner *http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page *http://www.safer-networking.org/en/index.html - Spybot Search & Destroy You can also do a check for a rootkit infection with TDSSKiller. *http://support.kaspersky.com/viruses/solutions?qid=208280684 See also: *"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

The problem may be in the website itself so you could try notifying the webmaster about it