function show(id) {
	if(document.all){
		if(document.all(id).style.display == "none"){
			document.all(id).style.display = "block";
		}
		else{
			document.all(id).style.display = "none";
		}
	}
	else if(document.layers){
		if(document.layers(id).style.display == "none"){
			document.layers(id).style.display = "block";
		}
		else{
			document.layers(id).style.display = "none";
		}
	}
	else if(document.getElementById){
		if(document.getElementById(id).style.display == "none"){
			document.getElementById(id).style.display = "block";
		}
		else{
			document.getElementById(id).style.display = "none";
		}
	}
}