var dsCartSummary=new Ext.data.Store({
	proxy:new Ext.data.HttpProxy({url:webroot+'index/cartSummaryAjax.do'}),
	reader:new Ext.data.JsonReader({
		root:'results',
		totalProperty:'1',
		id:'1'},[
				{name:'amount',mapping:'amount'},				
				{name:'count',mapping:'count'}
				]),
			remoteSort:false
			});

function cartSummary(ds,records,op){
	document.getElementById("idCount").innerHTML = records[0].data['count'];
	document.getElementById("idAmount").innerHTML = "￥" + records[0].data['amount'];
}

Ext.onReady(function(){
	dsCartSummary.on('load',cartSummary); 
	dsCartSummary.load({params:{method: paramMethod}});
});

function fRefresh() {
	dsCartSummary.load({params:{method: paramMethod}});
}