To mark World Mental Health Day on Saturday, Numiko has created a Flash application for the BBC asking visitors 'What Makes You Smile?'

The Leeds agency's work fits into the BBC's Headroom campaign, which is intended to help people cope with the everday stresses and strains of life and provide a safe place to start finding answers to more complex problems.

Visitors take part in the campaign by posting a comment about what makes them smile which then becomes attached to a balloon that they can customise with headwear, eyewear, mouths, eyes and colour.

The work aims to increase public awareness and understanding of mental health and mental illness.