dynamic buttons

dynamic buttons

i have the following divs and input buttons

<div id="row_<?=$i?>">

<div id="lesson_<?=$i?"></div>

<input type="button" id="button_<?=$i?"></div>

</div>


but there are a lot of such rows coming in my db so i don't know how many div will be. in order to delete the row in which the button is clicked what must i do?