title: How to add text over multiple table cells?
body: <p>I have a table with 20 rows and 24 cells. I want to display a label on one or more cell, that is when clicking one table cell, 3 or 4 cell including that cell should merged and make a common label for that cell at center aligned. But I don't want to use colspan, because I have already used the indexes of cells, it should not be changed. anyone have any idea. please help me. Thanks in advance.</p>