//*
//* Trim a String
//*
function trim(pString){
  var iStart, iEnd;
  var sTrimmed = "";
  var cChar;

  // Return empty sting if parameter is undefined
  if (pString==null)
        return sTrimmed;

  iEnd = pString.length - 1;
  iStart = 0;
  bLoop = true;
  cChar = pString.charAt(iStart);
  while ((iStart < iEnd) && ((cChar == "\n") || (cChar == "\r") ||
                            (cChar == "\t") || (cChar == " "))){
     iStart ++;
     cChar = pString.charAt(iStart);
  }
  cChar = pString.charAt(iEnd);
  while ((iEnd >= 0) && ((cChar == "\n") || (cChar == "\r") ||
                        (cChar == "\t") || (cChar == " "))){
     iEnd-=1;
     cChar = pString.charAt(iEnd);
  }
  if (iStart <= iEnd){
     sTrimmed = pString.substring(iStart, iEnd + 1);
  } else {
     sTrimmed = "";
  }
        return sTrimmed;
}

function ChkEmail(psEMail) {
var arrayOfStrings, bReturn;
var sPrefix, sDomain, sSuffix
        bReturn = true;

        if (trim(psEMail).length == 0)
                bReturn = false;


        // Parse  prefix, domain from string
        if (bReturn) {
                arrayOfStrings = psEMail.split("@")
                sPrefix = arrayOfStrings[0];
                sDomain = arrayOfStrings[1];
                if ((trim(sPrefix).length == 0) || (trim(sDomain).length == 0)) {
                       bReturn = false;
                }
        }

        // Parse  domain, suffix from domain
        if (bReturn) {
                arrayOfStrings = sDomain.split(".")
                sDomain = arrayOfStrings[0];
                sSuffix = arrayOfStrings[1];
                if ((trim(sDomain).length == 0) || (trim(sSuffix).length == 0)) {
                        bReturn = false
                }
        }
        return !bReturn;
}
function ChkBlanco(Str)
{	var s = trim(Str);
	if (s.length == 0) {
		return true 
		}
		else 
		{
		return false;
		}
}
function trimLeftZeroes( str ) {
        var rString ;

        // Checking if number is zero
        if ( str == "0" )
                rString = "0" ;
        else {
                // Removing zeroes
                var string = new String( str ) ;
                var rightDigit ;

                rightDigit = string.charAt(0) ;

                if ( rightDigit == "0" )
                        rString = trimLeftZeroes( string.substr( 1 ) ) ;
                else
                        rString = string.toString() ;
        }

        return rString ;
}
function ChkNumero(num)
{
	return isNaN(trim(num));
}
 function ChkFecha(psDate) {
        var arrayOfStrings, bReturn;
        var iYear, iMonth, iDay;
		bReturn = true;
		bEmpty = true ;
		if (trim(psDate).length!=0) {
			arrayOfStrings = psDate.split("/")
			iMonth = parseInt(trimLeftZeroes(arrayOfStrings[1]));
			iDay   = parseInt(trimLeftZeroes(arrayOfStrings[0]));
			iYear  = parseInt(trimLeftZeroes(arrayOfStrings[2]));
	
			if (isNaN(iYear) || isNaN(iMonth) || isNaN(iDay)) {
					bReturn = false;
			}
			if (iDay > 31 || iDay < 1 || iMonth < 1 || iMonth > 12 || iYear < 1) {
					bReturn = false;
			}
			if (iDay == 31 && "_1_3_5_7_8_10_12_".indexOf("_"+iMonth+"_") == -1 ) {
					bReturn = false;
			}
			if (iDay == 30 && iMonth == 2) {
					bReturn = false;
			}
			if (iDay == 29 && iMonth == 2 && !isLeapYear(iYear)) {
					bReturn = false;
			}
			
		}
		return bReturn;
}
function validar()
	 {
	 var Numero = "1234567890";
	  var s=document.forms[0].Monto.value;
	   for (i = 0;  i < s.length;  i++)  {
	    ch = s.charAt(i);
	    for (j = 0;  j < Numero.length;  j++)
	      if (ch == Numero.charAt(j))
	        break;
	    if (j == Numero.length)    {
			alert("El monto debe ser sólo números.");
			document.forms[0].Monto.focus(); 
 	        return (false);
	        }  }
		   if (s<24000000 || s>750000000)  
			{	alert("El monto no es aceptable.");
			    document.forms[0].Monto.focus();
		     return (false);  
		     } 
		     	  		if (mensaje!="")
	       {alert(mensaje)
		   mensaje="";
	        foco;
			foco="";
	       return (false);} 
		  return (true);
		}