Images have a "box" in HTML

Thanks so much for the help everyone!I am using PNG with IE. I tried the script above. Saved a .txt file loaded an external HTML into lectora names and chose object of Header scripting. Published and I am still seeing the blue boxes. I placed the external HTML on the highest level of my title (just above my navigation buttons and below my title name). I am wondering If I am just plain doing something wrong, becuase I also added some java script through the external HTML to run the course full screen once it is published in my LMS and that was not working either.I created the .txt file in wordpad and copy and pasted the above script in it. I also tried to change the .png to other formats (gif, jpeg)..those formats gave my images a black box. Sorry to throw so much out at you all. I appreciate any additional thoughts of what I might be doing wrong or what I can do to remedy my issue. Sherrie

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