function positionFooter()
    {
        var heightContent = 0;
	var headercontent = 0;

        if (document.getElementById('myheader'))
        {
            headercontent = document.getElementById('myheader').scrollHeight + 90;
        }


        if (document.getElementById('myleft'))
        {
            heightContent = document.getElementById('myleft').offsetHeight;
        }
        
        if (document.getElementById('mycenter'))
        {
            heightContent = document.getElementById('mycenter').offsetHeight > heightContent ? document.getElementById('mycenter').offsetHeight : heightContent;
        }

        if (document.getElementById('myright'))
        {
            heightContent = document.getElementById('myright').offsetHeight > heightContent ? document.getElementById('myright').offsetHeight : heightContent;
        }

        heightContent += headercontent + 50;

        if (document.getElementById('myfooter'))
        {
            if (navigator.userAgent && navigator.userAgent.indexOf("MSIE") >= 0)
            {
                document.getElementById('myfooter').style.setAttribute('top', heightContent + 'px');
            }
            else
            {
                document.getElementById('myfooter').style.setProperty('top', heightContent + 'px', null);
            }
        } 
    }