// 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";
	}

}