/*
This header must remain in place
http://www.plebius.org/javascripts/
Copyright 1999 All Rights Reserved.
http://www.plebius.org
Author: Martin Kretzmann
scripts@plebius.org
License: GNU General Public License
http://www.plebius.org/scripts/license.html


modified by the openBack to use current position as
starting point, to remove jumping at start of scroll.

*/
/*                 Configuration                       */

// number of pixels to scroll down...
n = 700     

/*******************************************************/

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 ];
}

function scrolldown(){
        for (I=getScrollXY()[1]; I<=n; I++){         
                window.scroll(1,I);
        }
}    

function scrollup(){
        for (I=getScrollXY()[1]; I>=1; I--){
                parent.scroll(n,I);
        }
}