<input type="button" value="Add column" onclick="appendColumn()" class="append_column">

As you can see, on button click appendColumn() is called and its source is shown on this page.

// open loop for each row
for (i = 0; i < tbl.rows.length; i++) {
    tbl.rows[i].insertCell(cols);
    // set value from input box
    tbl.rows[i].cells[cols].innerHTML = document.forms[0].myinput.value;
}

I want to have a dynamically table with the capability of adding rows/columns just like above example. A little bit more - all existing content in each cell are retrieved from database. The values for added cells in added column/row are to be either entered or selected from dropdown list like you showed in another example:

table
drop
down
menu

Thank you...

function appendColumn() {
    var tbl = document.getElementById('my_table'), // table reference
        cols = tbl.rows[0].cells.length,           // set number of columns
        i;                                         // loop variable
    // open loop for each row
    for (i = 0; i < tbl.rows.length; i++) {
        tbl.rows[i].insertCell(cols);
        // copy content from first column
        tbl.rows[i].cells[cols].innerHTML = tbl.rows[i].cells[1].innerHTML;
    }
}

I would like to be able to let the web user have a button that would allow them to add rows or columns depending on how I lay out the form.

For example in this case the Header is aligned vertically and the Columns should be able to expand or detract.

I see the code above but the question then becomes..." How do I program the Column to add WITH the content of the one next to it?

I hope that makes sense...

Ok...to elaborate... You are a business owner that want to purchase auto insurance.

You have twenty drivers... I would love for you to be able to type in a number or a range of numbers that would allow you enough "columns or rows" to be able to accomadate you. And they can complete the similar request to add vehicles...then submit. I am using a form to Excel and email php script from Hot Dreamweaver.

Thank you.