function rollOn(i)
{
var img = document[ "images/dot" + i + ".gif" ];
img.src = "http://www.actionarenas.com.au/brackenridge/images/dot" + i + "_on.gif";
}
function rollOff(i)
{
var img = document[ "images/dot" + i + ".gif" ];
img.src = "http://www.actionarenas.com.au/brackenridge/images/dot" + i + ".gif";
}

function rollSport( imageId, imageText, on )
{
	var img = document[ imageId ];
	if ( on )
		img.src = "http://www.actionarenas.com.au/brackenridge/images/" + imageText + "_on.gif";
	else
		img.src = "http://www.actionarenas.com.au/brackenridge/images/" + imageText + ".gif";
}