Offset
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jQuery .offsetParent( )
Get the closest ancestor element that is positioned.
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jQuery .scrollLeft( Number value )
Set the current horizontal position of the scroll bar for each of the set of matched elements.
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jQuery .scrollTop( Number value )
Set the current vertical position of the scroll bar for each of the set of matched elements.
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Object .position( )
Get the current coordinates of the first element in the set of matched elements, relative to the offset parent.
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jQuery .offset( Function function(index, coords) )
Set the current coordinates of every element in the set of matched elements, relative to the document.