var alt_container = window.innerHeight;
    if (!(alt_container > 0)) {
        var alt_container = document.documentElement.clientHeight;
	}

    var height_top  = document.getElementById("header").offsetHeight + document.getElementById("headerSwf").offsetHeight + document.getElementById("content2").offsetHeight  + document.getElementById("footer").offsetHeight;
    var height_cont = document.getElementById("footer").offsetHeight;
	var alturaFooter = alt_container - height_top;
    if (alturaFooter > 40) {
        var alt_wrapper = alturaFooter + 10;
        document.getElementById("footer").style.height = alt_wrapper + 'px';
    }