function loadCity()
{
	var selected="";
	var state = $('sel_state');
	var num_states = state.length;
	for(var i=0; i < num_states; i++)
	{
		if(state.options[i].selected==true)
		{
			selected+=state.options[i].value+",";
		}
	}
	var myRequest = new Request({
	url: 'actions/cities.php',
	method: 'post',
	onSuccess: function(responseText) {
		$('city_cont').set('html', responseText);
	}
	});
	var poststr="rnd="+Math.random()+"&state_id="+selected+"&submit=city_single";
	myRequest.send(poststr);
}