// JavaScript Document
function abreBib(obj)
{

	obj  = String(obj);
	
	if(obj == "todos"){
		document.getElementById('letraA').style.display = "block";
		document.getElementById('letraB').style.display = "block";
		document.getElementById('letraC').style.display = "block";
		document.getElementById('letraD').style.display = "block";
		document.getElementById('letraE').style.display = "block";
		document.getElementById('letraF').style.display = "block";
		document.getElementById('letraG').style.display = "block";
		//document.getElementById('letraH').style.display = "block";
		//document.getElementById('letraI').style.display = "block";
		//document.getElementById('letraJ').style.display = "block";
		//document.getElementById('letraK').style.display = "block";
		//document.getElementById('letraL').style.display = "block";
		document.getElementById('letraM').style.display = "block";
		document.getElementById('letraN').style.display = "block";
		document.getElementById('letraO').style.display = "block";
		document.getElementById('letraP').style.display = "block";
		//document.getElementById('letraQ').style.display = "block";
		//document.getElementById('letraR').style.display = "block";
		document.getElementById('letraS').style.display = "block";
		document.getElementById('letraT').style.display = "block";
		document.getElementById('letraV').style.display = "block";
		//document.getElementById('letraW').style.display = "block";
		document.getElementById('letraU').style.display = "block";
		//document.getElementById('letraX').style.display = "block";
		//document.getElementById('letraY').style.display = "block";
		//document.getElementById('letraZ').style.display = "block";
	}
	else {
		if(obj != "H" && obj != "I" && obj != "J" && obj != "K" && obj != "L" && obj != "Q"
		   && obj != "R" && obj != "W" && obj != "X" && obj != "Y" && obj != "Z" ){
			
	document.getElementById('msgInicial').style.display = "none";
		document.getElementById('letraA').style.display = "none";
		document.getElementById('letraB').style.display = "none";
		document.getElementById('letraC').style.display = "none";
		document.getElementById('letraD').style.display = "none";
		document.getElementById('letraE').style.display = "none";
		document.getElementById('letraF').style.display = "none";
		document.getElementById('letraG').style.display = "none";
		//document.getElementById('letraH').style.display = "none";
		//document.getElementById('letraI').style.display = "none";
		//document.getElementById('letraJ').style.display = "none";
		//document.getElementById('letraK').style.display = "none";
		//document.getElementById('letraL').style.display = "none";
		document.getElementById('letraM').style.display = "none";
		document.getElementById('letraN').style.display = "none";
		document.getElementById('letraO').style.display = "none";
		document.getElementById('letraP').style.display = "none";
		//document.getElementById('letraQ').style.display = "none";
		//document.getElementById('letraR').style.display = "none";
		document.getElementById('letraS').style.display = "none";
		document.getElementById('letraT').style.display = "none";
		document.getElementById('letraV').style.display = "none";
		//document.getElementById('letraW').style.display = "none";
		document.getElementById('letraU').style.display = "none";
		//document.getElementById('letraX').style.display = "none";
		//document.getElementById('letraY').style.display = "none";
		//document.getElementById('letraZ').style.display = "none";
	
		document.getElementById('letra' + obj).style.display = "block";
		}
	}
}

var A = "A";
var B = "B";
var C = "C";
var D = "D";
var E = "E";
var F = "F";
var G = "G";
var H = "H";
var I = "I";
var J = "J";
var K = "K";
var L = "L";
var M = "M";
var N = "N";
var O = "O";
var P = "P";
var Q = "Q";
var R = "R";
var S = "S";
var T = "T";
var U = "U";
var V = "V";
var W = "W";
var Y = "Y";
var X = "X";
var Z = "Z";