function toggleVisible(treepart){
	if (document.getElementById(treepart).style.visibility == "hidden"){
		document.getElementById(treepart).style.position="";
		document.getElementById(treepart).style.visibility="";
		if(document.images["i"+treepart]){
			document.images["i"+treepart].src="images/pix/minus.png";
		}
	}else{
		document.getElementById(treepart).style.position="absolute";
		document.getElementById(treepart).style.visibility="hidden";
		if(document.images["i"+treepart]){
			document.images["i"+treepart].src="images/pix/plus.png";
		}
	}
}

function toggleDisplay(n){
	if((document.getElementById(n).style.display == "")||(document.getElementById(n).style.display == "block")){
		document.getElementById(n).style.display = "none";
	}else{
		document.getElementById(n).style.display = "block";
	}
}

function showDiv(n){
	document.getElementById(n).style.position="";
	document.getElementById(n).style.visibility="";
}