var isDoingZip =false;

/******** call ajax, make loading animation *********/
function ajaxZip(arg){
	isDoingZip =true;
	showErr(false);
	setTimeout("_callZip('"+arg+"');",2000);
}


/*********** local ajax function ************/
function _callZip(arg){
	$.ajax({
	    url: 'ajax.jsp?',
	    type: 'post',
	    data: arg,
	    dataType: 'xml',
	    timeout: 6000,
		beforeSend : function(){
			//task before send
	    },
	    error: function(){
	        alert('Error loading ajax document');
	    },
	    success: function(xml){
			ajaxSuccessZip(xml);
	    },
		complete : function(){
	        isDoingZip =false;
			changeLoadImage(false);
	    }
	});
}