//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
function EsNumero(val) {
	var digits="1234567890";
	for (var i=0; i < val.length; i++) {
		if (digits.indexOf(val.charAt(i))==-1) { return false; }
		}
	return true;
	}
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// comprueba que sea un numero positivo
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

function IsNumeric(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789.";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX


// This function will trim leading and/or trailing spaces from a string
// arg = the value you wish to have trimmed..
// func = "left" for Ltrim(), "right" for RTrim() or "both" for Trim()

//===================================
function trim(arg,func) {
//===================================

	var trimvalue = "";
	arglen = arg.length;
	if (arglen < 1) return trimvalue;

	if (func == "left" || func== "both") {
		i = 0;
		pos = -1;
		while (i < arglen) {
			if (arg.charCodeAt(i) != 32 &&
!isNaN(arg.charCodeAt(i))) {
				pos = i;
				break;
			}
			i++;
		}
	}

	if (func == "right" || func== "both") {
		var lastpos = -1;
		i = arglen;
		while (i >= 0) {
			if (arg.charCodeAt(i) != 32 &&
!isNaN(arg.charCodeAt(i))) {
				lastpos = i;
				break;
			}
			i--;
		}
	}

	if (func == "left") {
			trimvalue = arg.substring(pos,arglen-1);
		}

	if (func == "right") {
		trimvalue = arg.substring(0,lastpos+1);
	}

	if (func == "both") {
		trimvalue = arg.substring(pos,lastpos + 1);
	}

	return trimvalue;

}

//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// Validación en el formato de un email
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

function validateEmail(emailAddress) {
   var match = /^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*$/.test(emailAddress);
   return match;
}



	//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX