var images = [];
images[0] = new Image(217, 51);
images[0].src = 'images/button-providenceminerals.png';
images[1] = new Image(217, 51);
images[1].src = 'images/button-providenceminerals-roll.png';
images[2] = new Image(148, 51);
images[2].src = 'images/button-pecminerals.png';
images[3] = new Image(148, 51);
images[3].src = 'images/button-pecminerals-roll.png';
images[4] = new Image(198, 51);
images[4].src = 'images/button-somersetminerals.png';
images[5] = new Image(198, 51);
images[5].src = 'images/button-somersetminerals-roll.png';
images[6] = new Image(116, 51);
images[6].src = 'images/button-contact.png';
images[7] = new Image(116, 51);
images[7].src = 'images/button-contact-roll.png';
images[8] = new Image(221, 51);
images[8].src = 'images/button-cheyenneexploration.png';
images[9] = new Image(221, 51);
images[9].src = 'images/button-cheyenneexploration-roll.png';

function swap(current, next)
{
	current.src = images[next].src;
}