[jQuery] How to get element's number of position, mean eq()

[mtest]

Hello again:)
My qгestion is:
I have several "attention" block:
<div class="Attention">...</div>
And there are button close in this blocks

How I can get number, in which "attention" block clicked on the
button?
$('.Attention .Close').bind("click", function(){
     alert($(this).eq());
});

How I can get numper of [position in eq() ???

Please, need a help

Thank you allways :)