function menu(menu,num){
	var y = document.getElementById(menu).style.display;
	if(y == "none"){
		for(var x=1;x<=num;x++){
			document.getElementById(x).style.display = "none";	
		}
		document.getElementById(menu).style.display = "block";		
	}else{
		for(var x=1;x<=num;x++){
			document.getElementById(x).style.display = "none";	
		}
	}
}