// JavaScript Document

function showtab(tab,btn) {
	var btnE=document.getElementById(btn);
	var tabE=document.getElementById(tab);
	
	// hide all tabs
	document.getElementById('tpv').style.display='none';
	document.getElementById('pda').style.display='none';
	document.getElementById('impresora').style.display='none';
	document.getElementById('accesorios').style.display='none';
	
	//show selected tab
	tabE.style.display='block';
	
	//unselect all tabs
	document.getElementById('btntpv').className='';
	document.getElementById('btnpda').className='';
	document.getElementById('btnimp').className='';
	document.getElementById('btnaccess').className='';
	
	//select tab and hide all left
	document.getElementById(btn).className='active';
	document.getElementById(btn).style.outline='none';
}