<!--
function ContAlcohol() {
  beb = document.forms[0].bebida.value;
  vol = document.forms[0].volumen.value;
  gra = document.forms[0].grados.value;
  tot = document.forms[0].total.value;
  ohcc = document.forms[0].ohcc.value;
  ohgr = document.forms[0].ohgr.value;
  vol = CambioComa(vol);
  gra = CambioComa(gra);
  if (beb=="" || vol=="" || gra=="") {
    alert("Faltan datos");
  }
  else {
    if (Comprobar(vol, gra) || vol=="." || gra==".") {
      alert("Datos incorrectos");
    }
    else {
      vol = parseFloat(vol);
      gra = parseFloat(gra);
      ccalc = (Math.round(vol*gra))/100;
      gralc = (Math.round(ccalc*80))/100;
      vol = (Math.round(vol*100))/100;
      gra = (Math.round(gra*100))/100;
      if (tot == ""){
        tot = eval(vol)+" cc de "+beb+" de "+eval(gra)+" grados ("+eval(ccalc)+" cc, "+eval(gralc)+" gr)";
      }
      else {
        tot = tot+"\n"+eval(vol)+" cc de "+beb+" de "+eval(gra)+" grados ("+eval(ccalc)+" cc, "+eval(gralc)+" gr)";
      }
      if (ohcc == "") {
        ohcc = ccalc;
      }
      else {
        ohcc = parseFloat(ohcc)+ccalc;
      }
      if (ohgr == "") {
        ohgr = gralc;
      }
      else {
        ohgr = parseFloat(ohgr)+gralc;
      }
    document.forms[0].bebida.value = "";
    document.forms[0].volumen.value = "";
    document.forms[0].grados.value = "";
    document.forms[0].total.value = tot;
    document.forms[0].ohcc.value = ohcc;
    document.forms[0].ohgr.value = ohgr;
    }
  }
}

function Comprobar(vol, gra) {
var k = 0;
var l = 0;
var todo = vol+gra;
var numeros = "0123456789.";
  for (i = 0;  i < vol.length;  i++) {
    if (vol.charAt(i) == ".") {
    k++;
    }
  }
  if (k > 1) {
  return true;
  }
  for (i = 0;  i < gra.length;  i++) {
    if (gra.charAt(i) == ".") {
    l++;
    }
  }
  if (l > 1) {
  return true;
  }
  for (i = 0;  i < todo.length;  i++) {
    for (j = 0;  j < numeros.length;  j++) {
      if (todo.charAt(i) == numeros.charAt(j)) {
      break;
      }
    }
    if (j == numeros.length) {
    return true;
    }
  }
return false;
}

function CambioComa(num) {
  num2 = "";
  for (i = 0;  i < num.length;  i++) {
    if (num.charAt(i) == ",") {
      num2 = num2+".";
    }
    else {
      if (num.charAt(i) == " ") {
        num2 = num2;
      }
      else {
        num2 = num2+num.charAt(i);
      }
    }
  }
  return num2;
}

function Borrar() {
 document.forms[0].bebida.value = "";
 document.forms[0].volumen.value = "";
 document.forms[0].grados.value = "";
 document.forms[0].total.value = "";
 document.forms[0].ohcc.value = "";
 document.forms[0].ohgr.value = "";
}

function move_in(img_name,img_src) {
document[img_name].src=img_src;
}

function move_out(img_name,img_src) {
document[img_name].src=img_src;
}
// -->