var cleanValidator = {
	init: function (settings) {
		this.settings = settings;
		this.form = document.getElementById(this.settings["formId"]);
		formInputs = this.form.getElementsByTagName("input");
		
		// change color of inputs on focus
		for(i=0;i<formInputs.length;i++)
		{
			if(formInputs[i].getAttribute("type") != "submit") {
				input = formInputs[i];
				input.style.background = settings["inputColors"][0];
				input.onblur = function () {
					this.style.background = settings["inputColors"][0];
				}
				input.onfocus = function () {
					this.style.background = settings["inputColors"][1];
				}
			}
		};
		this.form.onsubmit = function () {
			error = cleanValidator.validate();
			if(error.length < 1) {
				return true;
			} else {
				cleanValidator.printError(error);
				return false;
			}
		};
	},
	validate: function () {
		error = '';
		validationTypes = new Array("isRequired", "isEmail","isNumeric","isspace","ispassword","ispasswordcheck");
		for(n=0; n<validationTypes.length; n++) {
			var x = this.settings[validationTypes[n]];
			if(x != null) {
				for(i=0; i<x.length; i++) 
				{
					inputField = document.getElementById(x[i]);
					switch (validationTypes[n]) {
						case "isRequired" :
						valid = !isRequired(inputField.value);
						errorMsg = "is a required field.";
						break;
						case "isEmail" :
						valid = isEmail(inputField.value);
						errorMsg = "is an invalid email address.";
						break;
						case "isNumeric" :
						valid = isNumeric(inputField.value);
						errorMsg = "can only be a number.";
						break;
							
						case "isspace"	:
						
						var invalid = " "; // Invalid character is a space

							if (inputField.value.indexOf(invalid) > -1) {
							valid=true;			
															nam.style.display="none";
							}
							else {
								
								nam.style.display="";
									valid=false;
							   }
						break;
						
						case "ispassword" :
			
							var pas=document.example.field8.value;
							var chpas=inputField.value;
	
							if(pas!=chpas)	
							{
								valid=false;

							}		
							else
							{
								valid=true;
							}

							break;


						case "ispasswordcheck" :

							if(inputField.value=="123456" || inputField.value=="abcdef" || inputField.value.length<4)
							{


									valid=false;		
										


							}	
							else 
							{
									valid=true;
							
													
							}


 

					}
					if(!valid){
						
						error += x[i]+" "+errorMsg+"\n";
						inputField.style.background = this.settings["errorColors"][0];
						inputField.style.border = "0px solid "+this.settings["errorColors"][1];
						inputField.style.color="#000000"
					} else {
						inputField.style.background = this.settings["inputColors"][0];
						inputField.style.border = '0px solid';
						inputField.style.color="#000000";
					}
				}
			}
		}
		return error;
	},
	printError: function (error) {
		
	}
};

// returns true if the string is not empty
function isRequired(str){
	return (str == null) || (str.length == 0);
}
// returns true if the string is a valid email
function isEmail(str){
	if(isRequired(str)) return false;
	var re = /^[^\s()<>@,;:\/]+@\w[\w\.-]+\.[a-z]{2,}$/i
	return re.test(str);
}
// returns true if the string only contains characters 0-9 and is not null
function isNumeric(str){
	if(isRequired(str)) return false;
	var re = /[\D]/g
	if (re.test(str)) return false;
	return true;
}