function showhide(id){ 
	if (document.getElementById){ 
		obj = document.getElementById(id); 
		if (obj.style.display == ""){ 
			obj.style.display = "none"; 
		} else {
			obj.style.display = ""; 
		}
	} 
}
function hide(id){ 
	if (document.getElementById){ 
		obj = document.getElementById(id); 
		if (obj.style.display == ""){ 
			obj.style.display = "none"; 
		}
	} 
} 
function show(id){ 
	if (document.getElementById){ 
		obj = document.getElementById(id); 
		if (obj.style.display == "none"){ 
			obj.style.display = ""; 
		}
	} 
}