Form validation javascript

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
Form validation Javascript

Below is the form with 3 field to be validated.

<center><form method="post" action="">
<input type="hidden" name="meta_web_form_id" value="">
<input type="hidden" name="meta_split_id" value="">
<input type="hidden" name="unit" value="">
<input type="hidden" name="redirect" value="" id="">
<input type="hidden" name="meta_redirect_onlist" value="">
<input type="hidden" name="meta_adtracking" value="tracking">
<input type="hidden" name="meta_message" value="1">
<input type="hidden" name="meta_required" value="">
<input type="hidden" name="meta_forward_vars" value="1">
<tr><td colspan=2><center></center></td></tr>
<tr><td>Name:</td><td><input type="text" name="name" value="" size="20"></td></tr>
<tr><td>Email:</td><td><input type="text" name="from" value="" size="20"></td></tr>
<tr><td>zip:</td><td><input type="text" name="custom zip" value="" size="20"></td></tr>
<tr><td colspan=2><center></center></td></tr>
<tr><td align="center" colspan="2"><input type="submit" name="submit" value="Submit"></td></tr>

Then field name cannot be changed as it is a requirement for aweber.

The 3 field to be validated are:

custom zip

All error are to be in the form of a popup using:

alert("Error here");

Validate name (name)

Nothing has been submitted, name field is empty
Error message: "Zip/Postal code is required."

Correct format no special characters only alphabet used (A-Z a-z)
Error message "Your name can only contain letters of the alphabet."

No spaces, only one word for name field
Error message "Please enter only your first name."

Validate the email address (from)

Correct email address format or nothing submitted - Use Regular Expressions for valid email address format
Error message: "Enter a valid email address."

Validate the USA postal/zip code. (custom zip)

Nothing has been submitted or custom zip field is empty
Error message: "Zip/Postal code is required."

custom zip field is = five characters
Error message: "Zip/Postal code should be five characters."

custom zip field cannot contain spaces
Error message: "Zip/Postal code cannot have spaces"

custom zip field can only contain valid USA zipcode characters - Use Regular Expressions for valid USA zip code formats
Error message: "Zip/Postal code contains invalid characters."

This should be a very easy job for some experienced in JavaScript I am prepared to pay no more than $30 for this easy job and require it to be done ASAP.

Skills required:
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