int row = Integer.parseInt(rowIndexBox.getText());
headerTable.setHTML(row, cell, textBox.getText());
} else if (sender == insertRowButton) {
// Insert Row
int row = Integer.parseInt(rowIndexBox.getText());
headerTable.insertRow(row);
} else if (sender == insertCellButton) {
// Insert Cell
int cell = Integer.parseInt(cellIndexBox.getText());
int row = Integer.parseInt(rowIndexBox.getText());
headerTable.insertCell(row, cell);