//ajax

function vf_field(id,val) 
{
	$.ajax({
		url: url_base+'ajax/vf_field.php',
		type: 'GET',
		cache: false,
		dataType: 'html',
		data: 'tip='+id+'&val='+val,
		error: function(){
			alert('Error loading Ajax');
		},
		success: function(responseText){
			$('#span-'+id).html(responseText);
		}
	});
}