/*  
Clean Form Validation was written from scratch by Marc Grabanski 
// http://marcgrabanski.com/code/clean-form-validation 
/* Under the Creative Commons Licence http://creativecommons.org/licenses/by/3.0/ 
Share or Remix it but please Attribute the authors. */ 
 
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"); 
for(n=0; n<validationTypes.length; n++) { 
var x = this.settings[validationTypes[n]]; 
if(x != null) { 
for(i=0; i<x.length; i++)  
{ 
 
var myx=x[i].split(":"); 
 
inputField = document.getElementById(myx[0]); 
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; 
} 
if(!valid) { 
error += myx[1]+" "+errorMsg+"\n"; 
inputField.style.background = this.settings["errorColors"][0]; 
inputField.style.border = "1px solid "+this.settings["errorColors"][1]; 
} else { 
inputField.style.background = this.settings["inputColors"][0]; 
inputField.style.border = '1px solid'; 
} 
} 
} 
} 
return error; 
}, 
printError: function (error) { 
alert(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; 
}