<!--

function change_city()
{
	var city = new Number(document.getElementById('city').value);
	if (city != -1)
	{
		var streets = new ajax.ContentLoader('uch.php?id='+city+'',
			function()
			{
				if (this.req.responseText != '1')
				{
					document.getElementById('rayon_div').innerHTML = this.req.responseText;
					document.getElementById('street_div').innerHTML = '';
					document.getElementById('uch_div').innerHTML = '';
					document.getElementById('uch_txt').innerHTML = '';
					var rayon = new Number(document.getElementById('rayon').value);
					if (rayon != -1)
							change_rayon();
				}
				else
				{
					document.getElementById('street_div').innerHTML = '';
					document.getElementById('rayon_div').innerHTML = '';
					document.getElementById('uch_div').innerHTML = '';
					document.getElementById('uch_txt').innerHTML = '';
				}
			}
		);
	}
	else
	{
		document.getElementById('street_div').innerHTML = '';
		document.getElementById('rayon_div').innerHTML = '';
		document.getElementById('uch_div').innerHTML = '';
		document.getElementById('uch_txt').innerHTML = '';
	}
}

function change_rayon()
{
	var rayon = new Number(document.getElementById('rayon').value);
	if (rayon != -1)
	{
		var rayons = new ajax.ContentLoader('uch.php?id='+rayon+'',
			function()
			{
				document.getElementById('street_div').innerHTML = this.req.responseText;
				document.getElementById('uch_div').innerHTML = '';
				document.getElementById('uch_txt').innerHTML = '';
			}
		);
	}
	else
	{
		document.getElementById('street_div').innerHTML = '';
		document.getElementById('uch_div').innerHTML = '';
		document.getElementById('uch_txt').innerHTML = '';
	}
}

function change_street()
{
	var street = new Number(document.getElementById('street').value);
	if (street != -1)
	{
		var streets = new ajax.ContentLoader('uch.php?id='+street+'',
			function()
			{
				document.getElementById('uch_div').innerHTML = this.req.responseText;
				document.getElementById('uch_txt').innerHTML = '';
			}
		);
	}
	else
	{
		document.getElementById('uch_div').innerHTML = '';
		document.getElementById('uch_txt').innerHTML = '';
	}
}

function change_uch()
{
	var uch = new Number(document.getElementById('uch').value);
	if (uch != -1)
	{
		var streets = new ajax.ContentLoader('uch.php?id='+uch+'',
			function()
			{
				document.getElementById('uch_txt').innerHTML = this.req.responseText;
			}
		);
	}
	else
	{
		document.getElementById('uch_txt').innerHTML = '';
	}
}
//-->