(java script) How can i disable a drop down list?

[bhavanirayala]

Hi,

I want to disable drop down list according to the selection on radio buttons.

my code
[HTML] <td > SEARCH </td>
<td><input type="radio" name="letterOpt ion" ></td>
<td> <select name="letter"/> </td>
<td><input type="radio" name="fileOptio n" ></td>
<td> <select name="fileName"/> </td>
[/HTML]
If user selects letterOption then the second fileOption and select list should be disabled.
How can i acheive this.?

[acoder]

Please use code tags when posting code.

Use the onclick event handler on the radio button to control the disabling.

Use the 'disabled' property to disable an element:
[CODE=javascript]selObj.disabled = true;[/CODE]