if(!window.isEmpty) {
	window.isEmpty = function(val) {
		var re = /^\s{1,}$/g; //match any white space including space, tab, form-feed, etc. 
		if ((val.length==0) || (val==null) || ((val.search(re)) > -1)) {
			return true;
		} else {
			return false;
		}
	}
}
// End isEmpty

if(!window.isCPF) {
	window.isCPF = function(arg){
	    var pri = arg.substring(0,3);
	    var seg = arg.substring(4,7);
	    var ter = arg.substring(8,11);
	    var qua = arg.substring(12,14);
	    var i;
	    var numero=(pri+seg+ter+qua);
	    var s = numero;
	    var c = s.substr(0,9);
	    var dv = s.substr(9,2);
	    var d1 = 0;
	    for (i = 0; i < 9; i++)
	        d1 += c.charAt(i)*(10-i);
	    var result;
	    if (d1 == 0) result = "falso";
	    d1 = 11 - (d1 % 11);
	    if (d1 > 9) d1 = 0;
	    if (dv.charAt(0) != d1) result = "falso";
	    d1 *= 2;
	    for (i = 0; i < 9; i++) d1 += c.charAt(i)*(11-i);
	    d1 = 11 - (d1 % 11);
	    if (d1 > 9) d1 = 0;
	    if (dv.charAt(1) != d1) result = "falso";
	    return !(result == "falso");
	}
}
// End isCPF

if(!window.isCNPJ) {
	window.isCNPJ = function(str) {
		if (!(str = /^\d?(\d{2})\.?(\d{3})\.?(\d{3})\/?(\d{4})\-?(\d{2})/.exec(str)))
			return false;
	
		var sum1 = 0, sum2 = 0, sum3 = 0, calc1 = 5, calc2 = 6;
	
		str.shift();
		str = str.join("");
	
		for (var i=0; i <= 12; i++) {
			calc1 = (calc1 < 2) ? 9 : calc1;
			calc2 = (calc2 < 2) ? 9 : calc2;
	
			if (i <= 11)
				sum1 += str[i] * calc1;
	
			sum2 += str[i] * calc2;
			sum3 += str[i];
			calc1--;
			calc2--;
		}
	
		sum1 %= 11;
		sum2 %= 11;
	
		return (sum3 && str[12] == (sum1 < 2 ? 0 : 11 - sum1) && str[13] == (sum2 < 2 ? 0 : 11 - sum2)) ? str : false;
	}
}
// End isCNPJ

if(!window.isEmail) {
	function isEmail(str){
	    var apos = str.indexOf("@");
	    return !(apos < 1 || str.lastIndexOf(".")-apos < 2);
	}
}
// End isEmail

// $.fn.validar
if(!$.fn.validar) {
	(function(){
		// function factory para o validar.me
		$.fn.validar = function(_opts){
			var opts = $.extend({}, $.fn.validar.options, _opts);
			
			this.submit(function(){
				var $this = $(this);
				return $this.validar.me.call($this, opts);
			});
		}
		// End $.fn.valid
		
		// function que valida o form (this)
		$.fn.validar.me = function(o){
			var r = true;
			
			try{
				r = o.before();
			}catch(e){
				r = false;
			}
			
			try{
				this.find("input, select, textarea")
				.filter("[req=true], [req=text], [req=email], [req=cpf], [req=equals], [req=cnpj]")
				.filter(":visible")
				.each(function(){
					var $this = $(this)
						, val = $.trim($this.val())
						, label = ''
						, req = $this.attr("req");
					
					if(typeof $("label[for="+$this.attr("id")+"]")[0] == "object"){
						label = $.trim( $("label[for="+$this.attr("id")+"]").text() );
					}else{
						label = $.trim( $this.attr("label")  );
					}
					
					try{
						if(r){
							if(isEmpty(val)){
								throw "Por favor, preencha o campo "+label+".";
							}else if(req == "email") {
								if(!isEmail(val)) {
									throw "Por favor, preencha o corretamente o campo "+label+".";
								}
							}else if(req == "cpf") {
								if(!isCPF(val)) {
									throw "Por favor, preencha o corretamente o campo "+label+".";
								}
							}else if(req == "cnpj") {
								if(!isCNPJ(val)) {
									throw "Por favor, preencha o corretamente o campo "+label+".";
								}
							}else if(req == "equals") {
							    if(val != $($this.attr("equals")).val()){
							        throw "Por favor, preencha o corretamente o campo "+label+".";
							    }
							}
						}
					}catch(e){
						r = false;
						o.alert(e);
						setTimeout(function(){
						    $this.focus();
						}, 10);
					}
					
				})
			}catch(e){
				alert(e);
				r = false;
			}
			
			if(r && typeof o.end == "function"){
				try{
					r = o.end();
				}catch(e){
					r = false;
				}
			}
			
			return r;
		}
		// End $.fn.validar.me
		
		// options defaults
		$.fn.validar.options = {
			before: function(){
				return true;
			}
			, end: function(){
				return true;
			}
			, alert: (function(){
			    if(window.Notify) {
			        return function(msg) {
			            new Notify(msg);
			        }
			    } else {
			        return function(msg) {
			            alert(msg);
			        }
			    }
			})()
		}
		// End $.fn.validar.options
	
	})()
}
// End $.fn.valid