//------- Functions to check availability of user name USING AJAX -------------
var xmlHttp;
function StartCampaign(cookie,campaignid)
{ 
    
    
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	 {
		 alert ("Browser does not support HTTP Request");
		 return;
	 }

	var url="../admin/background_broadcast_ajax.php";
	url=url+"?c="+cookie;
    url=url+"&ca="+campaignid;
   	url=url+"&sid="+Math.random();
    //alert(url);
	xmlHttp.onreadystatechange=stateChanged2; 
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

}

//--------------------------------------------------------------------------

function stateChanged2() 
{ 
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
    { 
        // do nothing
    } 
}