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jQuery UI dialog positioning

I am trying to use the jQuery dialog UI library in order to position a dialog next to some text when it is hovered over. The jQuery dialog takes a position parameter which is measured from the top left corner of the current viewport (in other words, [0, 0] will always put it in the upper left hand corner of your browser window, regardless of where you are currently scrolled to). However, the only way I know to retrieve the location is of the element relative to the ENTIRE page.

The following is what I have currently. position.top is calculated to be something like 1200 or so, which puts the dialog well below the rest of the content on the page.

$(".mytext").mouseover(function() {
    position = $(this).position();
    $("#dialog").dialog('option', 'position', [position.top, position.left]);
}

How can I find the correct position?

Thanks!

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As an alternative, you could use the jQuery UI Position utility e.g.

$(".mytext").mouseover(function() {
    var target = $(this);
    $("#dialog").dialog("widget").position({
       my: 'left',
       at: 'right',
       of: target
    });
}

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