var i=0;
var nbimg=10;
function changeimages()
{
	i++;
	for (j=1;j<=nbimg;j++)
	{if (j==i) 	document.getElementById("photo"+j).style.visibility="visible";
	else document.getElementById("photo"+j).style.visibility="hidden";
	}
	if ((i+1)==(nbimg+1)) {i=0;setTimeout("changeimages()",2000);} else setTimeout("changeimages()",2000);
}