lastScrollY = 0;
function heartBeat() {
    var diffY;
    if (document.documentElement && document.documentElement.scrollTop)
        diffY = document.documentElement.scrollTop;
    else if (document.body)
        diffY = document.body.scrollTop
    else
    { /*Netscape stuff*/ }

    //alert(diffY);
    percent = .1 * (diffY - lastScrollY) + 8;
    if (percent > 0) percent = Math.ceil(percent);
    else percent = Math.floor(percent);
    document.getElementById("lovexin23").style.top = parseInt(document.getElementById("lovexin23").style.top) + percent + "px";

    lastScrollY = lastScrollY + percent;
    //alert(lastScrollY);

}


var obody = document.getElementsByTagName('body').item(0);
if (window.navigator.userAgent.indexOf("MSIE") >= 1) {
    //如果浏览器为IE
    obody.onkeydown = function() { doKeyDown(); };
}
else {
    obody.setAttribute("onkeydown", "doKeyDown();");
}
var div = document.createElement('div');
div.innerHTML = "<div id=\"lovexin23\" style='right: 15px; position: absolute; top: 120px;'><div><a id=\"A2\" target=\"_blank\" href='/aboutus/cpyc.html' target=\"_blank\"><img border=\"0\" style=\"width:118px; height:184px;\" src=\"/images/cpyc.gif\" /></a></div><a href=\"JavaScript:;\" onclick=\"lovexin23.style.visibility='hidden'\"><img border=\"0\" src=\"/images/close.gif\" style=\"width:118px; height:14px;\"/></a></div>";
obody.appendChild(div);

setInterval(heartBeat, 1);