LONDON, Nov. 22 (Xinhua) -- An art project 7.5 kilometers long will this year mark the run-up to Christmas on Britain's railways, and help tackle the problem of suicide.

Well-known lines from one of the most famous of all Christmas movies will be painted on the platforms at more than a dozen of the large stations in Britain.

The lines are from the American movie "It's a Wonderful Life", which was made in 1946 and starred Jimmy Stewart as a disillusioned small-town estate agent who tries to commit suicide on Christmas Eve, because he believes his business is a failure.

He is stopped from drowning by the intervention of a charming but incompetent angel called Clarence, who reveals to him the positive effect he has had on his community by showing him what would have happened to it had he not been there.

If the lines were all written out in one line they would stretch for 7.5 kilometers, and the project has been organized by rail firm Virgin Trains and mental health charity Rethink Mental Illness.

James Fletcher, head of corporate partnerships at Rethink Mental Illness said: "It is vital at this time of year to let people know that help is available if they need it -- this campaign highlights the need for this support at a time of the year which can be difficult for some of us, and we are proud to be part of it."

The lines from the film will be painted on the platform edges to remind people that there is hope, and to make them think again if they are contemplating suicide.

The lines will be painted at major stations connecting England to Scotland starting on Thursday at the major London terminal Euston.

Lines will be added between now and Christmas at major stations including Birmingham New Street, Crewe, Liverpool Lime Street, Manchester Piccadilly, Preston, Carlisle and Glasgow.