function rollOn(img, src){
	if(document.images) img.src= src;
}

function rollOff(img,src){
	if(document.images) img.src= src;
}


function toggleImage(imgName,num) {
	if (document.images && imgName) {
		imgName.src = im[num].src;
		}
	return;
}

//preload images
if(document.images)
{
	var imgAustralia = new Image();
	imgAustralia.src = "images/flags/au_large.gif";
	
	var imgCzechRepublic = new Image();
	imgCzechRepublic.src = "images/flags/cz_large.gif";
	
	var imgGermany = new Image();
	imgGermany.src = "images/flags/de_large.gif";
	
	var imgItaly = new Image();
	imgItaly.src = "images/flags/it_large.gif";
	
	var imgJapan = new Image();
	imgJapan.src = "images/flags/jp_large.gif";
	
	var imgKorea = new Image();
	imgKorea.src = "images/flags/kr_large.gif";
	
	var imgNetherlands = new Image();
	imgNetherlands.src = "images/flags/nl_large.gif";
	
	var imgSouthAfrica = new Image();
	imgSouthAfrica.src = "images/flags/za_large.gif";
	
	var imgUK = new Image();
	imgUK.src = "images/flags/uk_large.gif";
	
	var imgUSA = new Image();
	imgUSA.src = "images/flags/us_large.gif";
};