I've tried this and thought it should've work

<script type='text/javascript' src='jquery.js'></script>
		<script type='text/javascript'>
			$(document).ready(function(){
				$('#signUpfield').hide();
				$('#SignUpBUT').click(function(){
					$('#signUpfield').toggle();
				});
			});
		</script>

What went wrong? The reason I thought it was a problem with the libraries was because at first I got a '$ is undefined' error. Now it doesn't show errors, but still don't work...?

On another note, how do I go about verifying input, validating email, and then storing input into a secure database?

<fieldset id='signUpfield'>
		<form id='signUpFORM' action='' method='post'>
			<input type='text' id='user' value='UserName' />
			<input type='text' id='email' value='Email' />
			<input type='text' id='confirmEmail' value='Retype Email' />
			<input type='text' id='pass' value='Password' />
			<input type='text' id='confirmPass' value='Retype Password' />
			<input type='text' id='' value='' />
			<input type='submit' id='SubmitRegistration' value='Submit' onclick='verifyInput()' />
		</form>
</fieldset>