function act_tab(id) {
	if(id=='0' && stopTo) {
	window.clearTimeout(stopTo);
	}
	else {
	stopTo=window.setTimeout("change_tab("+id+")",300);
	}
}

function change_tab(id) {
var tab='1';
	while(tab<='5') {
		if(tab=='1') {
		document.getElementById('tab_1_').className='first_tab_';
		}
		else {
		document.getElementById('tab_'+tab+'_').className='';
		}
	document.getElementById('tab_cont_'+tab+'_').style.display='none';
	++tab;
	}
	if(id=='1') {
	document.getElementById('tab_1_').className='first_tab_ first_tab_selected_';
	}
	else
	{
	document.getElementById('tab_'+id+'_').className='tab_selected_';
	}
document.getElementById('tab_cont_'+id+'_').style.display='block';
}