A ringing mobile phone has ruined many a classic movie moment.

But what if Rhett Butler had turned to Scarlett O'Hara in Gone With The Wind and told her "Frankly my dear I don't give a . . . " before being rudely interrupted by a ringtone bleeping out the theme tune from Mission Impossible?

The idea is enough to put anyone off going to the movies - so film student Charlotte Bates was on to a winner when she turned to Rhett and Scarlett for help in winning a national film competition.

The 24-year-old, of Western Road, Brighton, had just 15 seconds to persuade judges she could entertain a cinema audience, while also convincing them to turn off their mobile phones. So she turned to what many consider to be the greatest film of all time.

Charlotte and fellow Edinburgh College of Art students Robbie Morrison, 22, and Hazel Baillie, 22, entered the Orange/Nokia Switch Off Your Mobile Phone film competition ahead of this year's Edinburgh Film Festival.

Film students from across the UK were asked to produce a creative and entertaining 15-second film sting under the theme Movies and Mobiles, while communicating the message for people to turn off their mobile phones.

Charlotte and her friends came up with the original but simple idea of using only text on screen.

This week their work was judged the overall winner, meaning the three students win £1,000 and get to have their film shown before every major movie at this month's Edinburgh Film Festival.

Up to 45,000 people will see Charlotte's work, including creative and film industry bosses.

Charlotte said: "We wanted to use a really classic film with a very well-known line that people would recognise even if they hadn't seen the film.

"Our film uses just text, which comes up as the words are being spoken. It is the bit where Scarlett says to Rhett 'If you go, where will I go, what will I do' and he says 'Frankly my dear, I don't give a damn' but instead of the word damn you just get a ring ring ring.

"I think the judges liked it because it was quite creative without trying too hard. We didn't spend lots of money doing a big fancy production.

"My ambitions lie more in producing but we all know that when we come out into the industry we're going to have to do things that make money."

Judge Shane Danielson, artistic director of the Edinburgh International Film Festival, said: "I always ask the audience to turn off their phones and it's great to see this done with such wit and style.

"Also, it's wonderful to have given young film-makers the opportunity to use their talents in a rewarding, practical, yet very fun exercise."

The film can be viewed at www.orange.co.uk/edinburgh