function showMessageBox(msg_headline,msg_text,msg_img) {
//obj = document.getElementsByTagName("div");
document.getElementById("message_box_headline_text1").innerHTML = msg_headline ;
document.getElementById("message_box_text1").innerHTML = '<img src="imgs/' + msg_img + '" align="left">' + msg_text ;
Element.show('message_box1');
//obj['message_box1'].style.visibility = 'visible';
}

function hideMessageBox() {
//obj = document.getElementsByTagName("div");
Element.hide('message_box1');
//obj['message_box1'].style.visibility = 'hidden';
}