var 과거StartOffset = $(document).scrollTop() > opts.startOffset;
var objFartherThanTopPos = $obj.offset().top > startOffset;
var objBiggerThanWindow = $obj.outerHeight()
if( (pastStartOffset || objFartherThanTopPos) && objBiggerThanWindow ){
var newpos = ($(document).scrollTop() -startOffset opts.offsetY );
if ( newpos > BottomPos )
newpos = BottomPos;
if ( $(document).scrollTop() newpos = parentPaddingTop;
$obj.animate({ top: newpos }, opts.duration );
}
});
};