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By: a guest on Apr 29th, 2012  |  syntax: None  |  size: 0.48 KB  |  hits: 8  |  expires: Never
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  1. inViewportTest = function () {
  2.         var winHeight = $(window).height(),
  3.             bottom = winHeight + $(window).scrollTop(),
  4.             top = $(window).scrollTop(),
  5.             thresholdTop = (this.options.threshold * winHeight) + top,
  6.             thresholdBottom = bottom - (this.options.threshold * winHeight);
  7.  
  8.         if (bottom <= this.offset().top && top >= this.offset().top + this.height()) {
  9.             return false;
  10.         } else {
  11.             return true;
  12.         }
  13.     };
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