// JavaScript Document
function showNav(index){
	var drop='nav_a'+index;
	var line='navline'+index;
	document.getElementById(line).className='li_select';
	document.getElementById(drop).style.display='block';
	}
	
function hiddNav(index){
	var drop='nav_a'+index;
	var line='navline'+index;
	document.getElementById(line).className='';
	document.getElementById(drop).style.display='';
	}