Populating text area

[Ravi Pat]

How do I populate a text area in a form, with certain pre-set values based on a drop down selection menu? Also, I need to make the text box non-editable. Please help...

Thanks

[Eric Pascarello]

Adding text to an textarea/textbox:

document.formName.elementName.value = "blah";

Disabling a textbox:

<input type="text" name="e" disabled="true">

Making textbox readOnly

<input type="text" name="e" readOnly="true">

Eric