function vFormLogin( nFrm ) /*nFrm: nombre del formulario*/
{
	var dtError = 0;
	var cf = new Array();
	cf[0] = "user_name,txtUsr,1";
	cf[1] = "pwd,txtPass,1";
	for ( i=0; i < cf.length; i++ )
	{
		arrDt = cf[ i ].split ( ',' );
		dtCleanString( nFrm, arrDt[ 0 ] );
		if ( parseInt( arrDt[ 2 ] ) == 1 )
			if ( !dtValidForm ( nFrm, arrDt[ 0 ], '', arrDt[ 1 ], 1 ) ) dtError++;
	}
	if ( dtError>0 )
	{
		alert ( 'Datos incorrectos. Los campos destacados deben ser corregidos.-' );
		return false;
	}
	else return true;
}
function vFormLoginPost( nFrm ) /*nFrm: nombre del formulario*/
{
	var dtError = 0;
	var cf = new Array();
	cf[0] = "rbd,txtUsr,1";
	cf[1] = "clave,txtPass,1";
	for ( i=0; i < cf.length; i++ )
	{
		arrDt = cf[ i ].split ( ',' );
		dtCleanString( nFrm, arrDt[ 0 ] );
		if ( parseInt( arrDt[ 2 ] ) == 1 )
			if ( !dtValidForm ( nFrm, arrDt[ 0 ], '', arrDt[ 1 ], 1 ) ) dtError++;
	}
	if ( dtError>0 )
	{
		alert ( 'Datos incorrectos. Los campos destacados deben ser corregidos.-' );
		return false;
	}
	else return true;
}