//Navigation
var ref;
function clean (){
	if ((navigator.appName=='Netscape') && (navigator.appVersion.charAt (0)<'5')){
		window.document.m01.visibility="hide";
		window.document.m11.visibility="hide";
		window.document.m12.visibility="hide";
		window.document.m02.visibility="hide";
		return;
	}
	if (navigator.appVersion.charAt (0)<'5'){
		var layers=document.all.tags ("div");
	} else {
		var layers=document.getElementsByTagName("div");
	}
	layers[2].style.visibility='hidden';
	layers[3].style.visibility='hidden';
	layers[4].style.visibility='hidden';
	layers[5].style.visibility='hidden';
	return;
}

function menu (i){
	switch(i){
	//MENU 1
		case 1:{
			if (navigator.appVersion.charAt (0)<'5') 
				var layers=document.all.tags ("div");
			else 
				var layers=document.getElementsByTagName("div");
			
			layers[2].style.visibility='visible';
			layers[3].style.visibility='hidden';
			layers[4].style.visibility='hidden';
			layers[5].style.visibility='hidden';
			
			return;
		}
		//MENU 2
		case 2:{
			if (navigator.appVersion.charAt (0)<'5') 
				var layers=document.all.tags ("div");
			else 
				var layers=document.getElementsByTagName("div");
			
			layers[2].style.visibility='visible';
			layers[3].style.visibility='visible';
			layers[4].style.visibility='hidden';
			layers[5].style.visibility='hidden';
			
			return;
		}
		case 3:{
			if (navigator.appVersion.charAt (0)<'5') 
				var layers=document.all.tags ("div");
			else 
				var layers=document.getElementsByTagName("div");
			
			layers[2].style.visibility='visible';
			layers[3].style.visibility='hidden';
			layers[4].style.visibility='visible';
			layers[5].style.visibility='hidden';
			
			return;
		}
		case 4:{
			if (navigator.appVersion.charAt (0)<'5') 
				var layers=document.all.tags ("div");
			else 
				var layers=document.getElementsByTagName("div");
			
			layers[2].style.visibility='hidden';
			layers[3].style.visibility='hidden';
			layers[4].style.visibility='hidden';
			layers[5].style.visibility='visible';
			
			return;
		}
	}
}


function setOn(){
	ref=setTimeout("clean()",1000);
}

function setOff(){
	clearTimeout(ref);
}