Photo gallery software pop up window is not displayed correctly in Internet Explorer. All other browsers display it OK.

Q: I installed VisualLightBox and it is running fine.
I used the program to implement a picture show on my website. The show works fine when using the Firefox. But if you use the Internet Explorer then an error occurs. The next button is displayed in the second line. At the right and left side of the picture the next and previous buttons are not displayed when moving the mouse into these areas.
Is there a bug in the program?
Or what do I have to change in order to get rid of this error?

A: Please use the following DOCTYPE declaration for universal compatibility:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "">