function show(id) {
	str = id.charAt(0);
	if(str == "d"){
		name = "";
	}else{
		name = id + "_hidden";
	}

	if(document.all){
		if(document.all(id).style.display == "none"){
			document.all(id).style.display = "block";
			if(name) document.all(name).innerHTML = "▲";
		}else{
			document.all(id).style.display = "none";
			if(name) document.all(name).innerHTML = "▼";
		}
	}else if(document.layers){
		if(document.layers(id).style.display == "none"){
			document.layers(id).style.display = "block";
			if(name) document.layers(name).innerHTML = "▲";
		}else{
			document.layers(id).style.display = "none";
			if(name) document.layers(name).innerHTML = "▼";
		}
	}else if(document.getElementById){
		if(document.getElementById(id).style.display == "none"){
			document.getElementById(id).style.display = "block";
			if(name) document.getElementById(name).innerHTML = "▲";
		}else{
			document.getElementById(id).style.display = "none";
			if(name) document.getElementById(name).innerHTML = "▼";
		}
	}
}