var xmlIndustry = new ActiveXObject("Microsoft.XMLDOM")
function changeCategory(category1S,category2S,type){
var category1 = document.getElementById( (category1S==null)?"category1":category1S );
var category2 = document.getElementById( (category2S==null)?"category2":category2S );
    category1Temp = category1.options[category1.selectedIndex].value;
    removeAll(category2);
    var newOption=document.createElement("option");
    newOption.value="";
    newOption.text="请选择...";
    category2.add(newOption);
    populate_select("/common/ajaxEntry.do?type="+type+"&parent_code=" + category1Temp,category2,false);

}