function knowchange()

{
number = Math.floor(Math.random()*20)

if (number==0)
{
document.write('Soweto boasts the only street in the world to house two Nobel Peace Winners - Nelson Mandela and Archbishop Desmond Tutu.')
}
if (number==1)
{
document.write('The Big Hole diamond mine at Kimberly is 800 metres deep and is the largest hand dug excavation on earth. ')
}
if (number==2)
{
document.write('South Africa occupies less than one per cent of the earth’s landmass and yet is home to 5% of its mammal species.')
}
if (number==3)
{
document.write('The world’s largest wine cellar, spanning 22 hectares, is in South Africa’s Winelands town of Paarl.')
}
if (number==4)
{
document.write('Cape Town is the top city on the BBC’s worldwide list of places to see in a lifetime.')
}
if (number==5)
{
document.write('The world’s first heart transplant was performed by Dr Christian Barnard in Cape Town on 3rd December 1967.')
}
if (number==6)
{
document.write('Adderley Street, Cape Town was the first street in the world to have white lines – painted in 1922.')
}
if (number==7)
{
document.write('Bloukrans Bridge near Plettenberg Bay is the highest bungee jump in the world – measuring a height of 216m.')
}
if (number==8)
{
document.write('South Africa’s Western Deep Levels gold mine reaches nearly 4km below the earth’s surface.')
}
if (number==9)
{
document.write('South Africa is the only country in world history to have voluntarily abandoned its nuclear weapons programme.')
}
if (number==10)
{
document.write('The Kreepy Krauly, a swimming pool vacuum cleaner that does the job automatically, was invented in South Africa.')
}
if (number==11)
{
document.write('DeBeers the world’s largest diamond company still controls the prices of 70% of the international diamond market. ')
}if (number==12)
{
document.write('The first complete hominid skull, fondly known as Mrs Ples, was discovered in Sterkfontein, South Africa in 1947.')
}if (number==13)
{
document.write('Durban has the largest Indian population outside of India, influencing cuisine, religion and lifestyle in the city.')
}if (number==14)
{
document.write('Namibia’s Fish River Canyon is the largest in Africa and is 160 kms long and up to 550 metres deep.')
}if (number==15)
{
document.write('Monkeyland near Plettenberg Bay is the world’s only multi-species free roaming primate sanctuary. ')
}if (number==16)
{
document.write('Robben Island, where Nelson Mandela was imprisoned for 27 years, is now a World Heritage Site.')
}if (number==17)
{
document.write('Winston Churchill, Mahatma Gandhi and General Botha were all at the Battle of Spioenkop – all three became world leaders.')
}if (number==18)
{
document.write('Oudsthoorn, South Africa is the world’s largest centre for commercial ostrich farming.')
}if (number==19)
{
document.write('The world’s second highest waterfalls are the Tugela Falls in the Drakensberg Mountains, falling some 947 metres.')
}

}