I have the code above at http://dot.kr/x-test/tree3.cfm
According to the width resolution of the browser, the page cut the end of the right and put it the next line although there is no <br> tag in the table cell.
I like to make it the horizontal scroll bar to be shown and all text in the table cell to be spread widely in a line.
Note where the scroll bar occurs. A table cell always expands to hold its content, so the first cell does not stay at 300px, and scrolling occurs on html, not the cell. The second cell has a normal block element, so is width constrained and and has its own scroll bar.