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function getPageSize()
{
    var xScroll, yScroll;
    if (window.innerHeight && window.scrollMaxY)
    {
        xScroll = document.body.scrollWidth;
        yScroll = window.innerHeight + window.scrollMaxY;
    }
    else if (document.body.scrollHeight > document.body.offsetHeight)
    {
        xScroll = document.body.scrollWidth;
        yScroll = document.body.scrollHeight;
    }
    else
    {
        xScroll = document.body.offsetWidth;
        yScroll = document.body.offsetHeight;
    }
    var windowWidth, windowHeight;
    if (self.innerHeight)
    {
        windowWidth = self.innerWidth;
        windowHeight = self.innerHeight;
    }
    else if (document.documentElement && do


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