function jd_pow()
	{
		if(document.getElementById('kategoria').value == 'działki')
			{
				document.getElementById('jd_pow').innerHTML = 'ar';
			}
		else
			{
				document.getElementById('jd_pow').innerHTML = 'm<sup>2<\/sup>';
			}
	}
function sort()
	{
		if(document.forms.belka.form_sort[2].checked)
		{
			document.forms.belka.form_sort_az[1].checked=true;
		}
		else
		{
			document.forms.belka.form_sort_az[0].checked=true;
		}
	}