You can disguise Pale Moon/Waterfox/Firefox as a different browser. To use the IE10 useragent, do the following:
Open the adress About:Config
In the whitespace of the page, right-click and pick "New > String"
Enter the string general.useragent.override
You'll be prompted for the string value. Use Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
In the page's search bar type general.useragent.enable.overrides
Double-click this entry to turn the feature on/off
Or, use a non-mozilla browser in the first place...