$(function()
{
	var btnmap={"btnpoint":{"startpoint":"起点站","endpoint":"终点站"},"btnline":{"line":"线路"},"btnbustop":{"busstop":"车站"}};
	$("#traficform :submit").click(function(e) {
        var needflds=btnmap[this.name];
		var fldname=[];
		for(var fld in needflds){
			if(this.form[fld].value) return true;
			fldname.push(needflds[fld]);
		}
		alert("请输入"+fldname.join("或"));
		return false;
    });
	$("#busstop,#startpoint,#endpoint").autocomplete(busstops,{autoFill:true});
}
);