function test_height(){
    setTimeout("test_height1();", 1000);
    setTimeout("test_height1();", 2000);
    setTimeout("test_height1();", 5000);
    setTimeout("test_height1();", 10000);
    setTimeout("test_height1();", 30000);
    setTimeout("test_height1();", 50000);
}

function test_height1(){
    var element = document.getElementById('left_panel');
    var content = document.getElementById('content_panel');
    var banner = document.getElementById('banner_panel');
    var footer = document.getElementById('footer');
    var intElemOffsetHeight = element.offsetHeight;
    var intCont = content.offsetHeight;
    var intBan = banner.offsetHeight;
    if(intElemOffsetHeight>(intCont+intBan)){
	footer.style.top = intElemOffsetHeight+205+'px';
    }else{
	footer.style.top = intCont+intBan+113+'px';
    }
    footer.style.visibility = 'visible';
    //document.write(element.offsetHeight);//intElemOffsetHeight);
}