// JavaScript Document
function vnumeros(){
	if (event.keyCode < 45 || event.keyCode > 57) 
		event.returnValue = false;
}
function vletras(e) {
    tecla = (document.all) ? e.keyCode : e.which;
    if (tecla==8) return true;
    patron =/[A-Za-z\sαινσϊΑΙΝΣΪ]/;
    te = String.fromCharCode(tecla);
    return patron.test(te);
} 
function valfa(e) {
    tecla = (document.all) ? e.keyCode : e.which;
    if (tecla==8) return true;
    patron =/[A-Za-z\sαινσϊΑΙΝΣΪ0123456789]/;
    te = String.fromCharCode(tecla);
    return patron.test(te);
} 

function valida_informes(){
	
}
var reOneOrMoreDigits = /[\d+]/;
var reNoDigits = /[^\d]/gi;
function doMask(textBox) {
	var keyCode = event.which ? event.which : event.keyCode;
	// enter, backspace, delete and tab keys are allowed thru
	if(keyCode == 13 || keyCode == 8 || keyCode == 9 || keyCode == 46)
		return true;
	// get character from keyCode....dealing with the "Numeric KeyPad" 
	// keyCodes so that it can be used
	var keyCharacter = cleanKeyCode(keyCode);
	// grab the textBox value and the mask
	var val = textBox.value;
	var mask = textBox.mask;
	// simple Regex to check if key is a digit
	if(reOneOrMoreDigits.test(keyCharacter) == false)
		return false;
	// get value minus any masking by removing all non-numerics
	val = val.replace(reNoDigits,'');
	// add current keystroke
	val += keyCharacter;
	// mask it...val holds the existing TextBox.value + the current keystroke
	textBox.value = val.maskValue(mask);
	setCaretAtEnd(textBox);
	return false;
}
// puts starting chars in field
function onFocusMask(textBox) {
	var val = textBox.value;
	var mask = textBox.mask;
	if(val.length == 0 || val == null) {
		var i = mask.indexOf('#');
		textBox.value = mask.substring(0,i);
	}
	setCaretAtEnd(textBox);
	// set just in case.
	textBox.maxlength = mask.length;
}
// blank field if no digits entered
function onBlurMask(textBox) {
	var val = textBox.value;
	// if no digits....nada entered.....blank it.
	if(reOneOrMoreDigits.test(val) == false) {
		textBox.value = '';
	}
}
String.prototype.maskValue = function(mask) {
	var retVal = mask;
	var val = this;
	//loop thru mask and replace #'s with current value one at a time
	// better way of doing this ???
	for(var i=0;i<val.length;i++) {
		retVal = retVal.replace(/#/i, val.charAt(i));
	}
	// get rid of rest of #'s
	retVal = retVal.replace(/#/gi, "");
	return retVal;
}
// The Numeric KeyPad returns keyCodes that ain't all that workable.
//
// ie: KeyPad '1' returns keyCode 97 which String.fromCharCode converts to an 'a'.
//
// This cheesy way allows the Numeric KeyPad to be used
function cleanKeyCode(key){
	switch(key){
		case 96: return "0"; break;
		case 97: return "1"; break;
		case 98: return "2"; break;
		case 99: return "3"; break;
		case 100: return "4"; break;
		case 101: return "5"; break;
		case 102: return "6"; break;
		case 103: return "7"; break;
		case 104: return "8"; break;
		case 105: return "9"; break;
		default: return String.fromCharCode(key); break;
	}
}
// From:
// http://www.faqts.com/knowledge_base/view.phtml/aid/1159/fid/130
function setCaretAtEnd (field) {
  if (field.createTextRange) {
	var r = field.createTextRange();
	r.moveStart('character', field.value.length);
	r.collapse();
	r.select();
  }
}

function isValidEmail(strEmail){
  validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
  if (strEmail.search(validRegExp) == -1) {
      return false;
  } 
  return true; 
}