// Standard crossbrowser function for layer show
function showLeer(which) {
	if (document.getElementById(which)) {
		for (i=1;i<=10;i++)
		if (which != 'leaf'+i) document.getElementById('leaf'+i).style.display = "none";
		if (document.getElementById(which).style.display == "none") document.getElementById(which).style.display = ""
		else document.getElementById(which).style.display = "none";
	}
}