var active = 0;

function sh(id){
	hi();
	if (active != id){
		document.getElementById("sm"+id).style.visibility = 'visible';
		document.getElementById("sm"+id).style.display = 'block';
		document.getElementById("smzav").style.visibility = 'visible';
		document.getElementById("smzav").style.display = 'block';
		active = id;
	}
}

function hi(){
	if (active != 0){
		document.getElementById("sm"+active).style.visibility = 'hidden';
		document.getElementById("sm"+active).style.display = 'none';
		document.getElementById("smzav").style.visibility = 'hidden';
		document.getElementById("smzav").style.display = 'none';
		active = 0;
	}
}

function showel(id){
	document.getElementById(id).style.visibility = 'visible';
	document.getElementById(id).style.display = 'block';
}

function hideel(id){
	document.getElementById(id).style.visibility = 'hidden';
	document.getElementById(id).style.display = 'none';
}