Sưu tầm một số code về window.onscroll

Sưu tầm một số code về window.onscroll
#leftBar {
position:fixed;
top:0;
left:0;
width:200px;
_position:absolute;
_top:expression(0+((e=document.documentElement.scrollTop)?e:document.body.scrollTop)+'px');
}
và một số khác tại trang này
// Editing Instructions
// 1. Change '#your_div_id' to whatever the ID attribute of your DIV is
// 2. Change '175' to whatever the height of your header is, if you have no header, set to 0

/********************************
*   (C) 2009 - Thiago Barbedo   *
*   - tbarbedo@gmail.com        *
*********************************/
window.onscroll = function()
{
    if( window.XMLHttpRequest ) {
        if (document.documentElement.scrollTop > 299 || self.pageYOffset > 299 && document.documentElement.scrollBottom > 100) {
            $('#sidebar_left').css('top',document.documentElement.scrollTop);
            $('#sidebar_right').css('top',document.documentElement.scrollTop);
        } else if (document.documentElement.scrollTop < 299 || self.pageYOffset < 299) {
            $('#sidebar_left').css('top','299px');
            $('#sidebar_right').css('top','299px');
        }
    }
}

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Tổng quan về overclock

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