With my extensive experience in web development, particularly in languages like HTML, HTML5, JavaScript, and PHP, I am confident that I can not only modify your script but also enhance its functionality to provide a full screen and iframe feature. The websites mentioned in my profile showcase my versatility and adaptability to different scripting techniques, which would definitely come in handy for this project.
Moreover, in-depth understanding of how to maximize user interface and experience (UI/UX) is one of my core competencies. With your requirement of making the script full screen and iframe compatible, I can make sure that not only the functionality is working perfectly but it also blends seamlessly with the overall design.
Overall, I believe I am best suited to take on this project because of my expertise with HTML5, JavaScript, PHP. I am passionate about what I do and dedicate myself fully to every task assigned to me. This thirst for perfection combined with my substantial experience makes me the ideal candidate to work on your script modification project. Let's discuss further how we can achieve your desired results together. Looking forward to hearing from you soon!