String.prototype.trim = function() { return this.replace(/^\s+|\s+$/, ''); };
String.prototype.isEmail = function() {
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(this)){
		return (true);
	} else {
		return (false);
	}
}
String.prototype.validURL = function () {
	var expreg = new RegExp();
	expreg.compile("^[A-Za-z]+://[A-Za-z0-9-]+\.[A-Za-z0-9]+\."); 
	if (expreg.test(this)) {
		return true;
	}
	
	return false;
}

String.prototype.isCpf = function() {
	cpf = this;
	valor = true;

	if (cpf.length < 11) {
		return false;
	}

	var nonNumbers = /\D/;
	if (nonNumbers.test(cpf)) {
		return false;
	}

	if (cpf == "00000000000" || cpf == "11111111111" || cpf == "22222222222" || cpf == "33333333333" || cpf == "44444444444" || cpf == "55555555555" || cpf == "66666666666" || cpf == "77777777777" || cpf == "88888888888" || cpf == "99999999999"){
		return false;
	}

	var a = [];
	var b = new Number;
	var c = 11;
	for (i=0; i<11; i++){
		a[i] = cpf.charAt(i);
		if (i < 9) b += (a[i] *  --c);
	}
	if ((x = b % 11) < 2) { a[9] = 0 } else { a[9] = 11-x }
	b = 0;
	c = 11;
	for (y=0; y<10; y++) b += (a[y] *  c--); 
	if ((x = b % 11) < 2) { a[10] = 0; } else { a[10] = 11-x; }
	if ((cpf.charAt(9) != a[9]) || (cpf.charAt(10) != a[10])){
		return false;
	}

	return true;
}

String.prototype.isDate = function() {
	DateToCheck = this;
	
	if (DateToCheck == "") {
		return true;
	}
	var m_strDate = this.formatDate();

	if (m_strDate == "") {
		return false;
	}

	var m_arrDate = m_strDate.split("/");
	var m_DAY = m_arrDate[0];
	var m_MONTH = m_arrDate[1];
	var m_YEAR = m_arrDate[2];

	if (m_YEAR.length > 4) {
		return false;
	}

	m_strDate = m_MONTH + "/" + m_DAY + "/" + m_YEAR;
	var testDate = new Date(m_strDate);

	if (testDate.getMonth() + 1 == m_MONTH) {
		return true;
	} else {
		return false;
	}
}//end function

String.prototype.formatDate = function(FormatAs) {
	DateToFormat = this;
	
	if (DateToFormat == "") {
		return "";
	}
	if (!FormatAs){
		FormatAs="dd/mm/yyyy";
	}

	var strReturnDate;
	FormatAs = FormatAs.toLowerCase();
	DateToFormat = DateToFormat.toLowerCase();
	var arrDate
	var arrMonths = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
	var strMONTH;
	var Separator;

	while(DateToFormat.indexOf("st")>-1){
		DateToFormat = DateToFormat.replace("st","");
	}

	while(DateToFormat.indexOf("nd")>-1){
		DateToFormat = DateToFormat.replace("nd","");
	}

	while(DateToFormat.indexOf("rd")>-1){
		DateToFormat = DateToFormat.replace("rd","");
	}

	while(DateToFormat.indexOf("th")>-1){
		DateToFormat = DateToFormat.replace("th","");
	}

	if(DateToFormat.indexOf(".")>-1){
		Separator = ".";
	}

	if(DateToFormat.indexOf("-")>-1){
		Separator = "-";
	}


	if(DateToFormat.indexOf("/")>-1){
		Separator = "/";
	}

	if(DateToFormat.indexOf(" ")>-1){
		Separator = " ";
	}

	arrDate = DateToFormat.split(Separator);
	DateToFormat = "";

	for(var iSD = 0;iSD < arrDate.length;iSD++){
		if (arrDate[iSD] != ""){
			DateToFormat += arrDate[iSD] + Separator;
		}
	}

	DateToFormat = DateToFormat.substring(0,DateToFormat.length-1);
	arrDate = DateToFormat.split(Separator);

	if (arrDate.length < 3){
		return "";
	}

	var DAY = arrDate[0];
	var MONTH = arrDate[1];
	var YEAR = arrDate[2];
	
	if(parseFloat(arrDate[1]) > 12) {
		DAY = arrDate[1];
		MONTH = arrDate[0];
	}

	if(parseFloat(DAY) && DAY.toString().length == 4) {
		YEAR = arrDate[0];
		DAY = arrDate[2];
		MONTH = arrDate[1];
	}

	for(var iSD = 0;iSD < arrMonths.length;iSD++){
		var ShortMonth = arrMonths[iSD].substring(0,3).toLowerCase();
		var MonthPosition = DateToFormat.indexOf(ShortMonth);
		if(MonthPosition > -1){
			MONTH = iSD + 1;
			if(MonthPosition == 0){
				DAY = arrDate[1];
				YEAR = arrDate[2];
			}
			break;
		}
	}

	var strTemp = YEAR.toString();
	if(strTemp.length==2){
		if(parseFloat(YEAR)>40){
			YEAR = "19" + YEAR;
		} else{
			YEAR = "20" + YEAR;
		}
	}

	if (parseInt(MONTH) < 10 && MONTH.toString().length < 2) {
		MONTH = "0" + MONTH;
	}
	if(parseInt(DAY)< 10 && DAY.toString().length < 2) {
		DAY = "0" + DAY;
	}


	switch (FormatAs){
		case "dd/mm/yyyy":
			return DAY + "/" + MONTH + "/" + YEAR;
		case "mm/dd/yyyy":
			return MONTH + "/" + DAY + "/" + YEAR;
		case "dd/mmm/yyyy":
			return DAY + " " + arrMonths[MONTH -1].substring(0,3) + " " + YEAR;
		case "mmm/dd/yyyy":
			return arrMonths[MONTH -1].substring(0,3) + " " + DAY + " " + YEAR;
		case "dd/mmmm/yyyy":
			return DAY + " " + arrMonths[MONTH -1] + " " + YEAR;	
		case "mmmm/dd/yyyy":
			return arrMonths[MONTH -1] + " " + DAY + " " + YEAR;
	}

	return DAY + "/" + strMONTH + "/" + YEAR;;
}

String.prototype.wordWrap = function(m, b, c){
	var i, j, s, r = this.split("\n");
	if(m > 0) for(i in r){
		for(s = r[i], r[i] = ""; s.length > m;
			j = c ? m : (j = s.substr(0, m).match(/\S*$/)).input.length - j[0].length
			|| j.input.length + (j = s.substr(m).match(/^\S*/)).input.length + j[0].length,
			r[i] += s.substr(0, j) + ((s = s.substr(j)).length ? b : "")
		);
		r[i] += s;
	}
	return r.join("\n");
}
String.prototype.numericEntities = function()
{
  var i;
  var chars = new Array ('&','à','á','â','ã','ä','å','æ','ç','è','é',
                         'ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô',
                         'õ','ö','ø','ù','ú','û','ü','ý','þ','ÿ','À',
                         'Á','Â','Ã','Ä','Å','Æ','Ç','È','É','Ê','Ë',
                         'Ì','Í','Î','Ï','Ð','Ñ','Ò','Ó','Ô','Õ','Ö',
                         'Ø','Ù','Ú','Û','Ü','Ý','Þ','€','\"','ß','<',
                         '>','¢','£','¤','¥','¦','§','¨','©','ª','«',
                         '¬','­','®','¯','°','±','²','³','´','µ','¶',
                         '·','¸','¹','º','»','¼','½','¾');

  var entities = new Array()
  for (i = 0; i < chars.length; i++)
  {
    entities[i] = chars[i].charCodeAt(0);
  }

  newString = this;
  for (i = 0; i < chars.length; i++)
  {
    myRegExp = new RegExp();
    myRegExp.compile(chars[i],'g')
    newString = newString.replace (myRegExp, '&#' + entities[i] + ';');
  }
  return newString;
}

String.prototype.htmlEntities = function()
{
  var chars = new Array ('&','à','á','â','ã','ä','å','æ','ç','è','é',
                         'ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô',
                         'õ','ö','ø','ù','ú','û','ü','ý','þ','ÿ','À',
                         'Á','Â','Ã','Ä','Å','Æ','Ç','È','É','Ê','Ë',
                         'Ì','Í','Î','Ï','Ð','Ñ','Ò','Ó','Ô','Õ','Ö',
                         'Ø','Ù','Ú','Û','Ü','Ý','Þ','€','\"','ß','<',
                         '>','¢','£','¤','¥','¦','§','¨','©','ª','«',
                         '¬','­','®','¯','°','±','²','³','´','µ','¶',
                         '·','¸','¹','º','»','¼','½','¾');

  var entities = new Array ('amp','agrave','aacute','acirc','atilde','auml','aring',
                            'aelig','ccedil','egrave','eacute','ecirc','euml','igrave',
                            'iacute','icirc','iuml','eth','ntilde','ograve','oacute',
                            'ocirc','otilde','ouml','oslash','ugrave','uacute','ucirc',
                            'uuml','yacute','thorn','yuml','Agrave','Aacute','Acirc',
                            'Atilde','Auml','Aring','AElig','Ccedil','Egrave','Eacute',
                            'Ecirc','Euml','Igrave','Iacute','Icirc','Iuml','ETH','Ntilde',
                            'Ograve','Oacute','Ocirc','Otilde','Ouml','Oslash','Ugrave',
                            'Uacute','Ucirc','Uuml','Yacute','THORN','euro','quot','szlig',
                            'lt','gt','cent','pound','curren','yen','brvbar','sect','uml',
                            'copy','ordf','laquo','not','shy','reg','macr','deg','plusmn',
                            'sup2','sup3','acute','micro','para','middot','cedil','sup1',
                            'ordm','raquo','frac14','frac12','frac34');

  newString = this;
  for (var i = 0; i < chars.length; i++)
  {
    myRegExp = new RegExp();
    myRegExp.compile(chars[i],'g')
    newString = newString.replace (myRegExp, '&' + entities[i] + ';');
  }
  return newString;
}

String.prototype.undoHtmlEntities = function()
{
  var chars = new Array ('&','à','á','â','ã','ä','å','æ','ç','è','é',
                         'ê','ë','ì','í','î','ï','ð','ñ','ò','ó','ô',
                         'õ','ö','ø','ù','ú','û','ü','ý','þ','ÿ','À',
                         'Á','Â','Ã','Ä','Å','Æ','Ç','È','É','Ê','Ë',
                         'Ì','Í','Î','Ï','Ð','Ñ','Ò','Ó','Ô','Õ','Ö',
                         'Ø','Ù','Ú','Û','Ü','Ý','Þ','€','\"','ß','<',
                         '>','¢','£','¤','¥','¦','§','¨','©','ª','«',
                         '¬','­','®','¯','°','±','²','³','´','µ','¶',
                         '·','¸','¹','º','»','¼','½','¾');

  var entities = new Array ('amp','agrave','aacute','acirc','atilde','auml','aring',
                            'aelig','ccedil','egrave','eacute','ecirc','euml','igrave',
                            'iacute','icirc','iuml','eth','ntilde','ograve','oacute',
                            'ocirc','otilde','ouml','oslash','ugrave','uacute','ucirc',
                            'uuml','yacute','thorn','yuml','Agrave','Aacute','Acirc',
                            'Atilde','Auml','Aring','AElig','Ccedil','Egrave','Eacute',
                            'Ecirc','Euml','Igrave','Iacute','Icirc','Iuml','ETH','Ntilde',
                            'Ograve','Oacute','Ocirc','Otilde','Ouml','Oslash','Ugrave',
                            'Uacute','Ucirc','Uuml','Yacute','THORN','euro','quot','szlig',
                            'lt','gt','cent','pound','curren','yen','brvbar','sect','uml',
                            'copy','ordf','laquo','not','shy','reg','macr','deg','plusmn',
                            'sup2','sup3','acute','micro','para','middot','cedil','sup1',
                            'ordm','raquo','frac14','frac12','frac34');

  newString = this;
  for (var i = 0; i < chars.length; i++)
  {
    myRegExp = new RegExp();
    myRegExp.compile('&' + entities[i] + ';','g')
    newString = newString.replace (myRegExp, chars[i]);
  }
  return newString;
}

String.prototype.stripTags = function()
{
	return this.replace(/(<([^>]*)>)/ig,"");
}