(function($){
	$.fn.validate = function(options){
		var settings = $.extend({
			required:false,
			email:false,
			phone:false,
			integer:false,
			success:function(){},
			failure:function(){}
		},options);
		
		var validateInteger = function(val){
			var i;
			for (i = 0; i < val.length; i++){
				var c = val.charAt(i);
				if (((c < "0") || (c > "9"))) return false;
			}
			return true;
		};
		var validateEmail = function(val){
			var trimmed = val.replace(/^\s+|\s+$/, '');
			var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
			var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
		   
			if (!emailFilter.test(trimmed) || val.match(illegalChars)) {
				return false;
			}
			return true;
		};
		
		var validatePhone = function(val,minDigits){
			var digits = "0123456789";
			var phoneNumberDelimiters = "()- ";
			var validWorldPhoneChars = phoneNumberDelimiters + "+";
			var minDigitsInIPhoneNumber = minDigits || 10;
		
			var stripCharsInBag = function(s, bag){ 
				var i;
				var returnString = "";
				for (i = 0; i < s.length; i++){
					var c = s.charAt(i);
					if (bag.indexOf(c) == -1) returnString += c;		
				}
				return returnString;
			}
			var s=stripCharsInBag(val,validWorldPhoneChars);
			return (validateInteger(s) && s.length >= minDigitsInIPhoneNumber);
	
		};
		return this.each(function(){
			var val = (this.nodeName.toLowerCase() == 'input' || this.nodeName.toLowerCase() == 'textarea')?$(this).val():$(this).text();
			if (val === '') {
				if (settings.required) {
					settings.failure.call(this, 'Required field');
					return;
				}
				settings.success.call(this);
				return;
			}
			if (settings.integer && !validateInteger(val)){
				settings.faiure.call(this,'Not a number');
				return;
			}
			if (settings.email && !validateEmail(val)){
				settings.failure.call(this,'Invalid Email')
				return;
			}
			if (settings.phone && !validatePhone(val)){
				settings.failure.call(this,'Invalid Phone Number')
				return;
			}
			settings.success.call(this);
		});				
	};
	
	
	
	$.fn.invalid = function(message, options){
		
			if(!options){
				return this.each(function(){
					var label = $('label[for='+this.id+']');
					$('<span class="invalid">'+message+'</span>').appendTo(label);	
				});
			}
			var settings = $.extend({
				type:'alert',
				message:'error'
			},options)
			
			switch(settings.type){
				case 'alert':
					alert(message);
			}
		
		
	};
	
	
	$.fn.valid = function(){
		return this.each(function(){
			var label = $('label[for='+this.id+']');
			label.find('.invalid').remove();
		});
	};
})(jQuery)