function jencisla() 
{
	with (event)
		if (keyCode<48 || keyCode>57) 
		{
		returnValue=false;
		}
}

function dva() 
{
	 if (operator.jmeno.value.length ==2) operator.heslo.focus();
}

function deset() 
{
	 if (operator.heslo.value.length ==10) operator.vstup.focus();
}


function prevod_kod() 
{
	operator.jmeno.value = operator.jmeno.value.toUpperCase();
}