How to create a resizable text box

These are the html codes for re-sizable text box. The size of the text box can be changed by changing width and height px sizes. and if you want to change inner color of text box past number of preferred color in to the color code in front of the "background color:"

<form action="/html/tags/html_form_tag_action.cfm" method="post">Comments:<br /><textarea name="comments" id="comments" style="width:600px;height:200px;background-color:#D0F18F;">Public Sub SayHello(ByVal person As String)End SubPublic Sub SayHello(ByVal personsName As String)End Sub</textarea><br /></form>