OverwriteBOM.js

public static void OnBeforeResponse(Session oSession) {

// If the response body starts with a Utf-8 signature, overwrite it with spaces
if (oSession.ResponseBody.Length > 3 &&
	oSession.ResponseBody[0] == 0xEF &&
	oSession.ResponseBody[1] == 0xBB &&
	oSession.ResponseBody[2] == 0xBF)
{
	oSession.ResponseBody[0] = 0x20;
	oSession.ResponseBody[1] = 0x20;
	oSession.ResponseBody[2] = 0x20;
	oSession["ui-backcolor"] = "red";
	oSession.ResponseHeaders["old-Content-Type"] = oSession.ResponseHeaders["Content-Type"];
	oSession.ResponseHeaders["Content-Type"] = (oSession.ResponseHeaders["Content-Type"] + "; charset=utf-8");
}