onchange

[deniz]

Hi,

I want to make a php document .I have comboxbox and checkboxes.I want that some checkboxes would appear,some don't changing to  which value chosen for combobox.As I learn I should use onchange ,but I don't know how to do.Can u help me?

[jvrothjr]

once the box is changed the form will refreach and $_POST['sample'] with be set

echo "<form name='myform' method='post'>";
echo "<select name='sample' onchange=form1.submit()>";
echo "<option value=''> </options>";
echo "<option value='test'>Testing</option>";
echo "</form>";