function hideAll()
{
	document.getElementById("img1").style.display="none";
	document.getElementById("img2").style.display="none";
	document.getElementById("img3").style.display="none";
	document.getElementById("img4").style.display="none";
	document.getElementById("img5").style.display="none";
}
function showImg(imgID)
{
	document.getElementById(imgID).style.display="block";
}