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michiel/topleft.coffee

Created May 7, 2013 17:42
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topleft.coffee
# Find element's top-left position, cross-browser
# via http://www.kirupa.com/html5/get_element_position_using_javascript.htm
topLeft = (e)->
x = y = 0
while e
x += e.offsetLeft - e.scrollLeft + e.clientLeft
y += e.offsetTop - e.scrollTop + e.clientTop
e = e.offsetParent
x : x
y : y
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