Your error is here
$('.#emailWrapper').click(function () {
From the rest of your code, you appear to be referring to an element with an ID of emailWrapper. You want to remove the dot from your selector. Inside your function, you refer to an event object. You have to pass this in your function.
$('#emailWrapper').click(function (event) {
EDIT
You're second issue is that you're trying to make your button be the dialog. You really need to create a div that will contain your dialog content. For example
<div id="mydiv">
<p>Display some stuff here</p>
</div>
Then define it as
$('#mydiv').dialog({
resizable: false,
autoOpen: false,
height: 140,
modal: true,
});
Then open it inside your click event
$("#mydiv").dialog("open");