<!--
function TensionMedia() {
  tas1 = document.forms[0].tas1atoma.value;
  tad1 = document.forms[0].tad1atoma.value;
  tas2 = document.forms[0].tas2atoma.value;
  tad2 = document.forms[0].tad2atoma.value;
  tas3 = document.forms[0].tas3atoma.value;
  tad3 = document.forms[0].tad3atoma.value;
  if (tas1=="" || tad1=="") {
    alert("Faltan datos");
  }
  else {
    if (Comprobar(tas1, tad1, tas2, tad2, tas3, tad3)) {
      alert("Datos incorrectos");
    }
    else {
      tasist = eval(tas1);
      tadias = eval(tad1);
      divis = 1;
      if (tas2!="" && tad2!="") {
        tasist += eval(tas2);
        tadias += eval(tad2);
        divis = 2;
        if (tas3!="" && tad3!="") {
          tasist += eval(tas3);
          tadias += eval(tad3);
          divis = 3;
        }
      }
      document.forms[0].media1.value = Math.round((eval(tas1)+(2*eval(tad1)))*10/3)/10;
      document.forms[0].prepul1.value = Math.round(eval(tas1)-eval(tad1));
      document.forms[0].media2.value = "";
      document.forms[0].prepul2.value = "";
      document.forms[0].media3.value = "";
      document.forms[0].prepul3.value = "";
      if (tas2!="" && tad2!="") {
        document.forms[0].media2.value = Math.round((eval(tas2)+(2*eval(tad2)))*10/3)/10;
        document.forms[0].prepul2.value = Math.round(eval(tas2)-eval(tad2));
        if (tas3!="" && tad3!="") {
          document.forms[0].media3.value = Math.round((eval(tas3)+(2*eval(tad3)))*10/3)/10;
          document.forms[0].prepul3.value = Math.round(eval(tas3)-eval(tad3));
        }
      }
      pres1 = Math.round(eval(tasist)*10/eval(divis))/10;
      pres2 = Math.round(eval(tadias)*10/eval(divis))/10;
      document.forms[0].tasmedia.value = pres1;
      document.forms[0].tadmedia.value = pres2;
      document.forms[0].mediamedia.value = Math.round((pres1+(2*pres2))*10/3)/10;
      document.forms[0].prepulmedia.value = Math.round((pres1-pres2)*10)/10;
    }
  }
}

function Comprobar(tas1, tad1, tas2, tad2, tas3, tad3) {
var todo = tas1+tad1+tas2+tad2+tas3+tad3;
var numeros = "0123456789";
  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 Borrar() {
 document.forms[0].tas1atoma.value = "";
 document.forms[0].tad1atoma.value = "";
 document.forms[0].tas2atoma.value = "";
 document.forms[0].tad2atoma.value = "";
 document.forms[0].tas3atoma.value = "";
 document.forms[0].tad3atoma.value = "";
 document.forms[0].media1.value = "";
 document.forms[0].prepul1.value = "";
 document.forms[0].media2.value = "";
 document.forms[0].prepul2.value = "";
 document.forms[0].media3.value = "";
 document.forms[0].prepul3.value = "";
 document.forms[0].tasmedia.value = "";
 document.forms[0].tadmedia.value = "";
 document.forms[0].mediamedia.value = "";
 document.forms[0].prepulmedia.value = "";
}

function Cerrar() {
window.self.close();
}
// -->