nice slider, but doesn’t auto recognise page with

After inserting a few slides to a page, I couldn’t understand why it didn’t auto know the width of the window following the text above and below. It auto made the slider 900px. But the landscape images showed with unattractive thin black lines and an edge of the following image. This is surely poor. I had to manually trial run various widths and depths to get it to fit. It was 1000px wide that solved the problem. Why it didn’t know this, when any simple image inserter would auto place the image to right size on width, I don’t know. Anyway it’s solved.