ajax call sample

big.php

function fetchFilteredRecords(val)
{
if(val=="custom")
{
$("#custom_filtering").show();


}
else
{
$("#custom_filtering").hide();
$.ajax({
type:"POST",
url:"filter/campaign_filter.php",
data:"filter="+val,
success: function(html)
{
$("#box_content_manage_advertiser").html(html);
}
});
$.blockUI({ css: {
border: 'none',
padding: '50px',
opacity: .5,
color: '#fff',
background: 'url(http://admin.activemobile.com/mx/img/spinner.gif) no-repeat 10px 10px'
} });
setTimeout($.unblockUI, 1000);

}
}

small.php

<script>
 function FetchSite()
	{
			$.ajax({
			type:"POST",
			url:"http://panel.activemobile.com/advertiser/advertiser_manage_campaign2.php?p=manage-campaign",
			data:"filter=",
			success: function(html)
			{
			$("#div_box").html(html);
			}
			});
				//alert('i am here');
	}
</script>