function areaJump(l_area, from)
{
	id = document.getElementById(from).selectedIndex;
	val = document.getElementById(from).options[id].value;
	FORM = document.getElementById('myform');

	if( location.pathname.match(/present/i) ){
		file = "/present/index.php";
	}else{
		file = "/";
	}

	switch(from)
	{
	case 'l_area':
		FORM.action = file+'?l_area_id=' + val;
		FORM.submit();
	break;
	case 'm_area':
		FORM.action =  file+'?l_area_id=' + l_area + '&m_area_id=' + val;
		FORM.submit();
	break;
	}
}