[JavaScript] 현재 화면 스크롤 위치 알아내기

링크: http://www.howtocreate.co.uk/tutorials/javascript/browserwindow

function getSize() {

  var myWidth = 0, myHeight = 0;

  if( typeof( window.innerWidth ) == 'number' ) {

    //Non-IE

    myWidth = window.innerWidth;

    myHeight = window.innerHeight;

  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {

    //IE 6+ in 'standards compliant mode'

    myWidth = document.documentElement.clientWidth;

    myHeight = document.documentElement.clientHeight;

  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {

    //IE 4 compatible

    myWidth = document.body.clientWidth;

    myHeight = document.body.clientHeight;

  }

  return [myWidth, myHeight];

}

function getScrollXY() {

  var scrOfX = 0, scrOfY = 0;

  if( typeof( window.pageYOffset ) == 'number' ) {

    //Netscape compliant

    scrOfY = window.pageYOffset;

    scrOfX = window.pageXOffset;

  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {

    //DOM compliant

    scrOfY = document.body.scrollTop;

    scrOfX = document.body.scrollLeft;

  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {

    //IE6 standards compliant mode

    scrOfY = document.documentElement.scrollTop;

    scrOfX = document.documentElement.scrollLeft;

  }

  return [ scrOfX, scrOfY ];

}