dropdown box selection choice checks a box

[dontpunchme]

I have a form that has a dropdown box in it and a checkbox. When a certain item in the dropdown is selected I want the checkbox to change to "checked".

Any ideas?

Thanks.

 

[vbkris]

in the dropdown:

<select name=&quot;drp&quot; .... onchange=&quot;CheckIt()&quot;>




<script>
function CheckIt()
{
if(document.FormName.drp.options[document.FormName.drp.selectedIndex].value==&quot;THE_VALUE&quot
{
document.FormName.Checkbox.checked==true
}
}
</script>

hth

FormName - Name of the form.

Known is handfull, Unknown is worldfull

 

[LFI]

And if you want to make SURE it is checked (i.e., you want to prevent the user from UNchecking it), alter vbkris' script to:

<script>
function CheckIt()
{
 if(document.FormName.drp.options[document.FormName.drp.selectedIndex].value==&quot;THE_VALUE&quot;)
 {
   document.FormName.Checkbox.checked = true;
   document.FormName.Checkbox.disabled = true;
 }
 else
 {
   document.FormName.Checkbox.disabled = false;
 }
}
</script>

Notice vbkris' typo also. The action inside the curly-braces should be &quot;checked = true&quot; (not &quot;==&quot. I'm certain he was merely typing on autopilot and did not intend to suggest &quot;==&quot;.

--Dave

 

[dontpunchme]

Thanks. Worked perfectly.