function res () {
	var bwidth = document.body.clientWidth;

	if ( bwidth <= 1100) {
		if (document.getElementById('ihead'))
			document.getElementById('ihead').className='ihead_';
	}
	else {
		if (document.getElementById('ihead'))
			document.getElementById('ihead').className='ihead';
	}

}

function mres () {
	var bwidth = document.body.clientWidth;

	if ( bwidth <= 1100) {
	document.getElementById('mhead').className='mhead_';
	}
	else {
	document.getElementById('mhead').className='mhead';
	}
}