if (document.getElementById){
document.write('<style type="text/css">\n')
document.write('.txt{display: none;}\n')
document.write('</style>\n')
}

function SwitchMenu1(obj){
	if(document.getElementById){
	var el1 = document.getElementById(obj);
	var ar1 = document.getElementById("menutendina1").getElementsByTagName("span");
		if(el1.style.display != "block"){
			for (var i=0; i<ar1.length; i++){
				if (ar1[i].className=="txt")
				ar1[i].style.display = "none";
			}
			el1.style.display = "block";
		}else{
			el1.style.display = "none";
		}
	}
}