Limit checkbox Array in form

[Fallen_angel]

how can I limit the number of selected boxes to 2 in a form like the one bellow

[code]<form>
<tr><td><INPUT TYPE=CHECKBOX NAME="taste_type[]" onclick="boxchk(this,3)" VALUE="Berry">Berry</td>
                <td><INPUT TYPE=CHECKBOX NAME="taste_type[]" VALUE="Bubblegum">Bubblegum</td>
                <td><INPUT TYPE=CHECKBOX NAME="taste_type[]"VALUE="Chemical">Chemical</td>
                  <td><INPUT TYPE=CHECKBOX NAME="taste_type[]" VALUE="Citrus">Citrus</td>
                  <td><INPUT TYPE=CHECKBOX NAME="taste_type[]" VALUE="Chocolate" >Chocolate</td></tr>
</form>[/code]

[printf]

If you want to do it in real time in the form, then JavaScript is the only way. If you want to do it with PHP, then handle it when the form is submitted, if more than 2 are selected, return the form with a explanation of the error so they can correct it.


printf