//prepnuti elementu do urciteho stavu viditelnosti
//elmID-id elementu
//state-jak zobrazit: true-display='', false-display='none', 'auto'-prepne stav mezi false a true
function elmSwitch(elmID,state)
{
	var elm=document.getElementById(elmID);
	if(elm)
	{
		if(state=='auto')
		{
			if(elm.style.display=='none')
			{
				state=true;
			}
			else
			{
				state=false;
			}
		}
		if(state)
		{
			elm.style.display='';
		}
		else
		{
			elm.style.display='none';
		}
	}
}