function newImage(arg)
{
	if (document.images)
	{
		var 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)
	{
		var rollHome = newImage("graphics/menu_home-roll.gif");
		var rollBlog = newImage("graphics/menu_blog-roll.gif");
		var rollStellar = newImage("graphics/menu_stellar-roll.gif");
		var rollAbout = newImage("graphics/menu_about-roll.gif");
		var rollRecoms = newImage("graphics/menu_recoms-roll.gif");
		var rollFiction = newImage("graphics/menu_fiction-roll.gif");
		var rollNews = newImage("graphics/menu_news-roll.gif");
		preloadFlag = true;
	}
}