[jQuery] position of element

I'm trying to get the position of all div-elements with a given class
("point") with this code:
$(".point").each(
    function() {
        var pos = this.position();
        alert(pos.left)
    }
)
This is the error I get on the "var pos..." line:
Microsoft JScript runtime error: Object doesn't support this property
or method
Can anyone tell me what i'm doing wrong?