var arrKey=new Array();

arrKey[1]="Z";
arrKey[2]="Y";
arrKey[3]="X";
arrKey[4]="W";
arrKey[5]="V";
arrKey[6]="U";
arrKey[7]="T";
arrKey[8]="S";
arrKey[9]="R";
arrKey[10]="Q";
arrKey[11]="P";
arrKey[12]="O";
arrKey[13]="N";
arrKey[14]="M";
arrKey[15]="L";
arrKey[16]="K";
arrKey[17]="J";
arrKey[18]="I";
arrKey[19]="H";
arrKey[20]="G";
arrKey[21]="F";
arrKey[22]="E";
arrKey[23]="D";
arrKey[24]="C";
arrKey[25]="B";
arrKey[26]="A";
arrKey[27]="9";
arrKey[28]="8";
arrKey[29]="7";
arrKey[30]="6";
arrKey[31]="5";
arrKey[32]="4";
arrKey[33]="3";
arrKey[34]="2";
arrKey[35]="1";
arrKey[36]="0";

function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function validRequired(formField,fieldLabel)
{
	var result = true;
	
	if (formField.value == "")
	{
		alert('El campo "' + fieldLabel +'" es obligatorio');
		formField.focus();
		result = false;
	}
	
	return result;
}

function allDigits(str)
{
	return inValidCharSet(str,"0123456789");
}

function inValidCharSet(str,charset)
{
	var result = true;

	// Note: doesn't use regular expressions to avoid early Mac browser bugs	
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0)
		{
			result = false;
			break;
		}
	
	return result;
}

function validEmail(formField,fieldLabel,required)
{
	var result = true;
	
	if (required && !validRequired(formField,fieldLabel))
		result = false;

	if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
	{
		alert("Por favor verifica que el correo electrónico sea válido (nombre@dominio.com) el campo "+ fieldLabel );
		formField.focus();
		result = false;
	}
   
  return result;

}

function validNum(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		if (!allDigits(formField.value))
 		{
 			alert('Por favor llenar con un numero al campo "' + fieldLabel +'"');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


function validInt(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		var num = parseInt(formField.value,10);
 		if (isNaN(num))
 		{
 			alert('Por favor llenar con un numero el campo "' + fieldLabel +'"');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


function validDate(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
		
  
 	if (result)
 	{
 		var elems = formField.value.split("/");
 		
 		result = (elems.length == 3); // should be three components
 		
 		if (result)
 		{
 			var day = parseInt(elems[0],10);
  			var month = parseInt(elems[1],10);
 			var year = parseInt(elems[2],10);
			result = allDigits(elems[0]) && (month > 0) && (month < 13) &&
					 allDigits(elems[1]) && (day > 0) && (day < 32) &&
					 allDigits(elems[2]) && (elems[2].length == 4) && (year>1900);
 		}
 		
  		if (!result)
 		{
 			alert('Por favor ingresa de esta manera (MM/DD/AAAA) el campo "' + fieldLabel +'".');
			formField.focus();		
		}
	} 
	
	return result;
}

function writeKey(num,thisImg)	{
	str=document.form1.Key.value;
	//alert(str.length);
	//alert(arrKey[num]);
	if (str.length<10)	{
		document.form1.Key.value=document.form1.Key.value+arrKey[num];
	}
	thisImg.src='caracteres/'+num+'dw.gif';

}

function OutKey(num,thisImg)	{
	thisImg.src='caracteres/'+num+'.gif';
}