function showdiv(id){
	if (document.getElementById){
		obj = document.getElementById(id);
		
		if (obj.style.display == "none"){
			obj.style.display = "block";
		} 
	}
}

function hidediv(id) { 
	if (document.getElementById){
		obj = document.getElementById(id);
		if (obj.style.display == "block"){
			obj.style.display = "none"; 
		} 
	}
}