I know how to remove text in a simple html textbox but html textareas seem much more complicated. instead of the value attribute you put the text right between:
<html>
<textarea> </textarea>.
</html>
This is why im having trouble making an onFocus and onBlur event.
<textarea name="message" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;">
Put anything for default value here
</textarea>
Live example: http://jsfiddle.net/SRYLg/