function menuShow (menuName){
	if (document.layers){
		document.layers[menuName].visibility = 'show';
	}else if (document.all){
		document.all[menuName].style.visibility = 'visible';
	}else if (document.getElementById){
		document.getElementById(menuName).style.visibility = 'visible';
	}
}
function menuHide (menuName){
	if (document.layers){
		document.layers[menuName].visibility = 'hide';
	}else if (document.all){
		document.all[menuName].style.visibility = 'hidden';
	}else if (document.getElementById){
		document.getElementById(menuName).style.visibility = 'hidden';
	}
}
function btnOver (btnName){
	if (document.layers){
		document[btnName].src = document[btnName].src.substring(0,document[btnName].src.length-5) + "1.gif";
	}else if (document.all){
		document[btnName].src = document[btnName].src.substring(0,document[btnName].src.length-5) + "1.gif";
	}else if (document.getElementById){
		document.getElementById(btnName).src = document.getElementById(btnName).src.substring(0,document.getElementById(btnName).src.length-5) + "1.gif";
	}
}
function btnOut (btnName){
	if (document.layers){
		document[btnName].src = document[btnName].src.substring(0,document[btnName].src.length-5) + "0.gif";
	}else if (document.all){
		document[btnName].src = document[btnName].src.substring(0,document[btnName].src.length-5) + "0.gif";
	}else if (document.getElementById){
		document.getElementById(btnName).src = document.getElementById(btnName).src.substring(0,document.getElementById(btnName).src.length-5) + "0.gif";
	}
}