Block emails from user

<iframe class="overlayIFrame" frameborder="0" style="z-index: 50000" ></iframe>
<div style="border: 5px solid #32698D; width: 320px; background: #ECECEC; padding: 10px; text-align: left;" id="ajaxLoginDiv">
	<div>
		<span onmouseout="this.className='close'" onmouseover="this.className='close on';" style="margin: 0px;" onclick="ajaxLoginDialog.destroy()" class="close"> </span>
		<span class="blueLabel">Login or Sign up to perform action</span>
	</div>
	<div id="ajaxLoginLoading" style="display: none;"><span class="loading" >Logging in ...</span></div>
	<form method="post" id="ajaxLoginForm" action="http://toostep.com/j_security_check" onsubmit="showDiv('ajaxLoginLoading'); saveUsername(this);">
		<div style="padding: 10px 5px;">
			<div>
				<span>Email Id:</span>
				<input type="text" class="text_100" style="font-size: 12px; width: 95%" name="j_username" id="j_username" tabindex="1"/>
				<span>Password:</span>
				<input name="j_password" id="j_password" style="font-size: 12px; width: 95%" tabindex="2" type="password" class="text_100">
			</div>
			<div style="padding: 5px 0">
				<span><a  href="http://toostep.com/forgotPassword.html" >Forgot password?</a></span>
				<span>
						<INPUT type=checkbox value=1 tabindex="3" name="rememberMe" id="rememberMe" style="padding:0; margin:0" checked="checked">  Remember me
					</span>
				</div>
			<div style="padding: 10px 0">
				<div style="float: right;">
					<span style="line-height: 24px;font-size: 12px;">  or <a href="http://toostep.com/signup.html">Sign Up</a></span>
				</div>
				<div style="float: right;">
					<span class="nGreyBtn"><a href="#" name="loginButon" id="ajaxLoginSubmit" onclick="ge('ajaxLoginForm').submit(); return false;">Sign In</a></span>
				</div>
			</div>
		</div>								
		<input type="submit" style="top: -10000px; position: absolute;"/>
		<input type="hidden" name="target" id="ajaxLoginTarget" value="__target__"/>
		<input type="hidden" name="failureUrl" id="ajaxLoginFailureUrl" value="__failureUrl__"/>
		</form>						
</div>