swapImages = new Array('burple', 'controotball', 'grizza', 'punday', 'saloughnut', 'sleaker', 'wheels');
if (!swapImageTitle) var swapImageTitle = swapImages[ (Math.ceil( Math.random() * swapImages.length ) -1) ];

document.getElementById('swapImage').src = IFs.global.graphicsRoot + 'headerimage_'+ swapImageTitle +'.jpg';