Display Jquery UI Dialog on current mouse position, bug in IE 8

I am using Jquery UI Dialog and its working fine in FF/Chrome/Opera but there's some issue with IE, I am having latest version of JQuery UI 1.8.5 and all the workarounds setting position:absolute etc are not working at all,

What I need is if my anchor tag is near to end of the browser window and there's not enou开发者_运维知识库gh space for the ui dialog window to appear, the IE shows it down bringing the vertical bar, the user has to scroll a lil bit to see the ui dialog, this works fine in FF and chrome as mentioned earlier.

What I am looking at is some kind of work around to get over with this.

Here's the code thats opening the UI Dialog.

$("#opener").click(function() {

                    primaryDialog.dialog("open");

                return false;
            }).mouseover(function(event) {

                OnMouseOver(event);

            });

function OnMouseOver(event) {
            primaryDialog.dialog("option", "position", {
                my: "right top",
                at: "left bottom",
                of: event,
                offset: "10 10"
            });

        }