function Visibility(id){
	if(document.all){
		if(document.all(id).style.visibility == "visible"){
			document.all(id).style.visibility = "hidden";
		}else if(document.all(id).style.visibility == "hidden"){
			document.all(id).style.visibility = "visible";
		}
		if(document.all("visibility1").style.visibility == "hidden"){
			document.all("visibility2").style.visibility = "hidden";
			document.all("visibility3").style.visibility = "hidden";
			document.all("visibility4").style.visibility = "hidden";
		}
	}else if(document.getElementById){
		if(document.getElementById(id).style.visibility == "visible"){
			document.getElementById(id).style.visibility = "hidden";
		}else if(document.getElementById(id).style.visibility == "hidden"){
			document.getElementById(id).style.visibility = "visible";
		}
		if(document.getElementById("visibility1").style.visibility == "hidden"){
			document.getElementById("visibility2").style.visibility = "hidden";
			document.getElementById("visibility3").style.visibility = "hidden";
			document.getElementById("visibility4").style.visibility = "hidden";
		}
	}
}