greying out part of a form

You could also add a check to see what the value of that 4th check box is when you disable it too, if you want to make sure it's 'unchecked' when you do.

Ok....quick and nasty version, but you'll get the idea.....

<script type="text/javascript" language="javascript">
function enable_disable()
{
var box4 = document.getElementById("chkTest4");
if(box4.disabled == true)
{
box4.disabled = false;
}
else
{
box4.disabled = true;
}
}
</script>

<form action="#cgi.script_name#" method="post" name="frmTest">
<input id="chkTest1" name="chkTest1" type="checkbox" value="1" onClick="enable_disable()"> Checkbox 1<br />
<input id="chkTest2" name="chkTest2" type="checkbox" value="1"> Checkbox 2<br />
<input id="chkTest3" name="chkTest3" type="checkbox" value="1"> Checkbox 3<br />
<input id="chkTest4" name="chkTest4" type="checkbox" value="1"> Checkbox 4<br />
</form>

wondering if anyone has an example - it would be great if someone could show an example and also some sample code.

Or you could use IF statements to enable or disable certain fields ... but JavaScript is probably better.

Sorry.....probably should have expanded on that. Use the onClick event of your checkbox to fire a javascript function that enables/disables the other checkboxes you want to control.

Javascript is your friend on this one.