d=document;
function g(id){
	return d.getElementById(id);
}

function showList(num){
	if(g('doself'+num).style.display == "none"){
		for(j=1; j<4; j++){
			if(num!=j) g('doself'+j).style.display = "none";
			else g('doself'+j).style.display = "block";
		}
	}
	else{
		for(k=1; k<4; k++){
			g('doself'+k).style.display = "none";
		}
	}
}