var bNetscape4plus = (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1) >= "4");
var bExplorer4plus = (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1) >= "4");

function CheckUIElements()
{
    var yMenuFrom, yMenuTo, yButtonFrom, yButtonTo, yOffset, timeoutNextCheck;

    if ( bNetscape4plus ) 
    { 
        yMenuFrom   = document["divMenu"].top;
        yMenuTo     = top.pageYOffset + 350; 
    }
    else if ( bExplorer4plus ) 
    {
        yMenuFrom   = parseInt (divMenu.style.top, 10);
        yMenuTo     = document.body.scrollTop + 150; //¾àÒ³Ã涥²¿µÄ¾àÀë
    }

    timeoutNextCheck = 500;

    if ( Math.abs (yButtonFrom - (yMenuTo + 152)) < 6 && yButtonTo < yButtonFrom ) 
    {
        setTimeout ("CheckUIElements()", timeoutNextCheck);
        return;
    }

    if ( yButtonFrom != yButtonTo ) 
    {
        yOffset = Math.ceil( Math.abs( yButtonTo - yButtonFrom ) / 10 );
        if ( yButtonTo < yButtonFrom )
              yOffset = -yOffset;

        if ( bNetscape4plus )
              document["divLinkButton"].top += yOffset;
        else if ( bExplorer4plus )
              divLinkButton.style.top = parseInt (divLinkButton.style.top, 10) + yOffset;

        timeoutNextCheck = 10;
    }
    if ( yMenuFrom != yMenuTo ) 
    {
        yOffset = Math.ceil( Math.abs( yMenuTo - yMenuFrom ) / 20 );
        if ( yMenuTo < yMenuFrom )
              yOffset = -yOffset;

        if ( bNetscape4plus )
              document["divMenu"].top += yOffset;
        else if ( bExplorer4plus )
              divMenu.style.top = parseInt (divMenu.style.top, 10) + yOffset;

        timeoutNextCheck = 10;
    }

    setTimeout ("CheckUIElements()", timeoutNextCheck);
}

function OnLoad()
{
    var y;
    if ( top.frames.length )
    if ( bNetscape4plus ) 
    {
        document["divMenu"].top = top.pageYOffset + 135; 
        document["divMenu"].visibility = "visible";
    }
    else if ( bExplorer4plus ) 
    {
        divMenu.style.top = document.body.scrollTop + 235;
        divMenu.style.visibility = "visible";
    }
    CheckUIElements();
    return true;
}
OnLoad();