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{
if (typeof window.pageYOffset == 'number')
{
return window.pageYOffset;
}
var CompatMode = window.document.compatMode;
var DocumentElement = window.document.documentElement;
if ((typeof CompatMode == 'string') &&
(CompatMode.indexOf('CSS') >= 0) &&
(DocumentElement) && (typeof
DocumentElement.getAttribute("scrollTop") ==
'number'))
{
return DocumentElement.getAttribute("scrollTop");
}
var Body = window.document.body ;
if ((Body) && (typeof Body.getAttribute("scrollTop") == 'number'))
{
return Body.getAttribute("scrollTop");
}
return 0;
}
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