-----点击事件,具体的颜色什么的可以自己调一下
var trade = this.options.form.getWidgetByName("trade");//获取下拉框控件名称
setTimeout(function(){
$("div[widgetname='TRADE'].report-main-parameter-container-controller-combo .bi-border").css({"border-color":"#999999","border-radius":"6px","background-color":"#20ade5"})
$("div[widgetname='TRADE'].report-main-parameter-container-controller-combo .bi-text").css({"background":"#999999","border-radius":"6px 0px 0px 6px","font-family":"微软雅黑","color":"#20ade5","font-size":"13px","text-align":"left"});
},300)