function newImage(arg)
{
	if (document.images)
	{
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages()
{
	if (document.images && (preloadFlag == true))
	{
		for (var i=0; i < changeImages.arguments.length; i += 2)
		{
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages()
{
	if (document.images)
	{
		bdhome = newImage("/images/buttons/bdhome.gif");
		bdpicks = newImage("/images/buttons/bdpicks.gif");
		bdhandicappers = newImage("/images/buttons/bdhandicappers.gif");
		bdaudio = newImage("/images/buttons/bdaudio.gif");
		bdtracks = newImage("/images/buttons/bdtracks.gif");
		bdabout = newImage("/images/buttons/bdabout.gif");
		preloadFlag = true;
	}
}