function preLoadImages()
{
var img1 = new Image()
img1.src = "shop/images/addtotrolleyhl.gif"
var img2 = new Image()
img2.src = "shop/images/removefromtrolleyhl.gif"
}

function showItem(strItemID)
{
window.location.replace("index.php?item=" + strItemID)	
}