下拉bug修改

@@ -261,6 +261,8 @@ $(document).on("change","#brandId",function(){
 	var id=$(this).val();
 	Bll.productNameArr[0]=$(this).find("option[value='"+id+"']").text();
 	Bll.setProductName();
+	$("#supplierId").val(-1).trigger("change"); 
+	$("#shopId").val(-1).trigger("change"); 
 	tabTree.isfeeze=false;
 	tabTree.init([{id:"",sortName:""},{id:"",sortName:""},{id:"",sortName:""},{id:"",sortName:""}]);
 });

@@ -53,13 +53,14 @@ dropDown.prototype = {
                     type: 'POST',
                     delay: 250,
                     data: function(params) {
+                        var param={};
                         if(Object.prototype.toString.call(option.params)=="[object Function]"){
-                            option.params=option.params();
+                            param=option.params();
                         }
 
                         var data = $.extend({}, {
                             idName: params.term
-                        }, option.params || {});
+                        }, param || {});
                         return data;
                     },
                     processResults: function(data, params) {