Spry: Conditionally Fields

Hi,

I am using DW CS3 to create spry fields.

I have a situation in which I want one field to become required based upon the
value of another field. In my page I added the following:

var chkOtherValid = function(value, options){
var sel = document.getElementById("Chk");
var Chk_value = sel.options[sel.selectedIndex].value;
if ((Chk_value == 'OTH') && (value == '')) {
return false;
}
return true;
}


var chkOtherValid = new
Spry.Widget.ValidationTextField("spryChkOther", "custom",
{isRequired:false});

Within my form I have the following:

<span id="spryChkOther">
<input type="text" name="ChkOth"
size="23" maxlength="15"
onblur="this.value=this.value.toUpperCase();" />
<span class="textfieldRequiredMsg">A value is required.</
span></span> </td>
</tr>


My problem is that I am no getting the expected result.

Can someone please help me.


Thank You.


Regards,
Al