Scroll i Safari og Chrome virker ikke

Hov Safari vil jo have document.body.scrollTop...
Hvordan gør jeg så begge understøttes i min kode ?

har fundet løsningen

window.onscroll = window.onresize = function() {
    if (!scroll_div_frame_2) return;
        if( typeof( window.pageYOffset ) == 'number' ) {
            //Netscape compliant
            scroll_div_frame_2.style.left = (-window.pageXOffset) + "px";
            scroll_div_frame_4.style.left = (-window.pageXOffset) + "px";
            scroll_div_frame_4.style.top = (-window.pageYOffset) + "px";
            scroll_div_frame_3.style.top = (-window.pageYOffset) + "px";
        } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
            //DOM compliant
            scroll_div_frame_2.style.left = (-document.body.scrollLeft) + "px";
            scroll_div_frame_4.style.left = (-document.body.scrollLeft) + "px";
            scroll_div_frame_4.style.top = (-document.body.scrollTop) + "px";
            scroll_div_frame_3.style.top = (-document.body.scrollTop) + "px";
        } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
            //IE6 standards compliant mode
            scroll_div_frame_2.style.left = (-document.documentElement.scrollLeft) + "px";
            scroll_div_frame_4.style.left = (-document.documentElement.scrollLeft) + "px";
            scroll_div_frame_4.style.top = (-document.documentElement.scrollTop) + "px";
            scroll_div_frame_3.style.top = (-document.documentElement.scrollTop) + "px";
        }
}