<!--
/****START VALIDAR_FECHA*********/
function validar_fecha(oTxt)
{
	
	var bOk = true;
	if (oTxt.value != ""){
	bOk = bOk && (valAno(oTxt));
	bOk = bOk && (valMes(oTxt));
	bOk = bOk && (valDia(oTxt));
	bOk = bOk && (valSep(oTxt));
	}
	if (!bOk)
		return false;
	else
		return true;
}
function esDigito(sChr){
var sCod = sChr.charCodeAt(0);
return ((sCod > 47) && (sCod < 58));
}
function valSep(oTxt){
var bOk = false;
//bOk = bOk || ((oTxt.value.charAt(2) == "-") && (oTxt.value.charAt(5) == "-"));
bOk = bOk || ((oTxt.value.charAt(2) == "/") && (oTxt.value.charAt(5) == "/"));
return bOk;
}
function finMes(oTxt){
var nMes = parseInt(oTxt.value.substr(3, 2), 10);
var nRes = 0;
switch (nMes){
case 1: nRes = 31; break;
case 2: nRes = 29; break;
case 3: nRes = 31; break;
case 4: nRes = 30; break;
case 5: nRes = 31; break;
case 6: nRes = 30; break;
case 7: nRes = 31; break;
case 8: nRes = 31; break;
case 9: nRes = 30; break;
case 10: nRes = 31; break;
case 11: nRes = 30; break;
case 12: nRes = 31; break;
}
return nRes;
}
function valDia(oTxt){
var bOk = false;
var nDia = parseInt(oTxt.value.substr(0, 2), 10);
bOk = bOk || ((nDia >= 1) && (nDia <= finMes(oTxt)));
return bOk;
}
function valMes(oTxt){
var bOk = false;
var nMes = parseInt(oTxt.value.substr(3, 2), 10);
bOk = bOk || ((nMes >= 1) && (nMes <= 12));
return bOk;
}
function valAno(oTxt){
var bOk = true;
var nAno = oTxt.value.substr(6);
//bOk = bOk && ((nAno.length == 2) || (nAno.length == 4));
bOk = bOk && (nAno.length == 4);
if (bOk){
for (var i = 0; i < nAno.length; i++){
bOk = bOk && esDigito(nAno.charAt(i));
}
}
return bOk;
}

/****STOP VALIDAR FECHA*********/


function trim(cadena)
{
	for(i=0; i<cadena.length; ){
		if(cadena.charAt(i)==" ")
			cadena=cadena.substring(i+1, cadena.length);
		else
			break;
	}
	for(i=cadena.length-1; i>=0; i=cadena.length-1){
		if(cadena.charAt(i)==" ")
			cadena=cadena.substring(0,i);
		else
			break;
	}
	return cadena;
}

function validar_email($mail)
{
	var expresionRegular = new RegExp(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,})+$/);
	if( expresionRegular.test($mail))
		return true;
	else
		return false;
}



// -->