function switch_panel1(id, act)
{
	var c1 = document.getElementById(id +'c1');
	var c2 = document.getElementById(id +'c2');
	if (act==1) {
		change_css(id+'a1', 'sel');
		change_css(id+'a2', 'right');
		c1.style.display='block';
		c2.style.display='none';
	} else {
		change_css(id+'a1', '');
		change_css(id+'a2', 'right sel');
		c2.style.display='block';
		c1.style.display='none';
	}
}