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

        if ( bNetscape4plus ) { // ³×Ã÷ÄÉÀÌÇÁ ¿ë ¼³Á¤
                //yButtonFrom = document["divLinkButton"].top;
                //yButtonTo   = top.pageYOffset + top.innerHeight - 55;
                yMenuFrom   = document["divMenu"].top;
                yMenuTo     = top.pageYOffset + parseInt(t_height);   // À§ÂÊ À§Ä¡
        }
        else if ( bExplorer4plus ) {  // IE ¿ë ¼³Á¤
                //yButtonFrom = parseInt (divLinkButton.style.top, 10);
                //yButtonTo   = document.body.scrollTop + document.body.clientHeight - 55;
                yMenuFrom   = parseInt (divMenu.style.top, 10);
                yMenuTo     = document.body.scrollTop + parseInt(t_height); // À§ÂÊ À§Ä¡
        }

        timeoutNextCheck = 500;

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

        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 ("Onload("+t_height+")", timeoutNextCheck);
}