function turnPurple()
{
    document.getElementById('colorDiv').style.backgroundColor = 'purple';
}
function turnGreen()
{
    document.getElementById('colorDiv').style.backgroundColor = 'green';
}
function turnOrange()
{
    document.getElementById('colorDiv').style.backgroundColor = 'orange';
}
function turnRed()
{
    document.getElementById('colorDiv').style.backgroundColor = 'red';
}
function turnBlue()
{
    document.getElementById('colorDiv').style.backgroundColor = 'blue';
}