function dispchg(a){
	if(a == 0){
		document.getElementById('top-info').style.display = 'block';
		document.getElementById('siteguide').style.display = 'none';

		document.getElementById('change0').style.fontWeight = 'bold';
		document.getElementById('change1').style.fontWeight = 'normal';
	}else if(a == 1){
		document.getElementById('top-info').style.display = 'none';
		document.getElementById('siteguide').style.display = 'block';

		document.getElementById('change0').style.fontWeight = 'normal';
		document.getElementById('change1').style.fontWeight = 'bold';
	}
}