// FUNCTION OPEN/CLOSE BUCKET
function openCloseBucket(bucketNum) {
    for (var i=1; i<4; i++) {
        if (bucketNum!=i) {
            document.getElementById("bucketLinks"+i).style.display="none";
            document.getElementById("bucket"+i).className="bucketCLOSED";
        }
    }
    document.getElementById("bucketLinks"+bucketNum).style.display="block";
    document.getElementById("bucket"+bucketNum).className="bucketOPEN";
}