var imgCount = 19;
var imgOutput = new Array(imgCount);
imgOutput[0] = Math.floor(Math.random()*imgCount);
imgOutput[1] = Math.floor(Math.random()*imgCount);
while (imgOutput[1] == imgOutput[0]) {
	imgOutput[1] = Math.floor(Math.random()*imgCount);
}
imgOutput[2] = Math.floor(Math.random()*imgCount);
while (imgOutput[2] == imgOutput[0] || imgOutput[2] == imgOutput[1]) {
	imgOutput[2] = Math.floor(Math.random()*imgCount);
}