Transparent Button

Hello

i have designed an interactive system wherein i have used drag and drop action… i want to use the smae actiion for text field. so that the user can write in the details and can drag and drop the text field to the desired place.
How can this be done… how can i drag a text field??
I know one way wherin i create transparent button below the text field. how do i do it??

You could put the text field in an MC and drag that.