Aaron's solution

validator.js

@@ -1,7 +1,67 @@
 
-  //insert your code here
-
-$(function(){
+//insert your code here
+var invalidEmailError = $(".errors li:nth-child(1)");
+var passwordTooShortError = $(".errors li:nth-child(2)");
+var noCapitalLetterError = $(".errors li:nth-child(3)");
+var noNumberError = $(".errors li:nth-child(4)");
 
-  //insert your code here
+function ProcessForm() {
+  var validEmail = ValidateEmail();
+  var validPass = ValidatePassword();
+  return validEmail && validPass;
+}
+
+function ValidateEmail() {
+
+  var email = $("input:text").val();
+  var emailRegex = /[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/;
+
+  if (!emailRegex.test(email)) {
+    invalidEmailError.show();
+    return false;
+  } else {
+    invalidEmailError.hide();
+    return true;
+  }
+};
+
+function ValidatePassword() {
+
+  var password = $("input:password").val();
+  var capitalLetterRegex = /.*[A-Z].*/;
+  var numberRegex = /.*[0-9].*/;
+  var minPassLength = 8;
+  var validPassword = true;
+
+  if (password.length < minPassLength) {
+    passwordTooShortError.show();
+    validPassword = false;
+  } else {
+    passwordTooShortError.hide();
+  };
+
+  if (!capitalLetterRegex.test(password)) {
+    noCapitalLetterError.show();
+    validPassword = false;
+  } else {
+    noCapitalLetterError.hide();
+  };
+
+  if (!numberRegex.test(password)) {
+    noNumberError.show();
+    validPassword = false;
+  } else {
+    noNumberError.hide();
+  }
+  return validPassword;
+}
+
+$(function() {
+  $(".errors li").hide();
+  $("form").submit( function() {
+    var validForm = ProcessForm();
+    if (!validForm) {
+      event.preventDefault();
+    }
+  });
 });