function show_msg_form(){
	opened = document.getElementById('opened_mf').value;
	if (opened == 1){
		document.getElementById('message_form').className='hidden';
		document.getElementById('opened_mf').value = 0;
		}
	else {
		document.getElementById('message_form').className='';
		document.getElementById('opened_mf').value = 1;
		}
}