function changelocation(locationid)
{
  document.ftiwen.BoardClass.length=0; 
  var locationid=locationid;
  var i;
  for (i=0;i < onecount; i++) {
    if (subcat[i][1] == locationid){document.ftiwen.BoardClass.options[document.ftiwen.BoardClass.length] = new Option(subcat[i][0], subcat[i][2]);}
  }
}

function check_askform(obj)
{
  if(obj.title.value =="" || obj.title.value.length ==0){
    alert("请输入问题标题");obj.title.focus();return false;
  }
  
  var len = obj.title.value.length;
  if(len<8){
    ls_str = "问题标题不详细，请重新输入";
    alert(ls_str);
    obj.title.focus();
    return false;    
   }  
  if (len>100){
    ls_str = "问题标题字数限定在100个汉字以内，请缩短提问字数";
    alert(ls_str);
    obj.title.focus();
    return false; 
  }

  var content_length = obj.content.value.length;
  if(content_length<5){
    ls_str = "请填写问题说明，说明越详细，解答就越有针对性";
    alert(ls_str);
    obj.content.focus();
    return false;
  }
  if ( content_length >3000){
    ls_str = "问题说明字数限定在3000字节以内，请缩短字数";
    alert(ls_str);
    obj.content.focus();
    return false;
  }

  if(obj.BoardNlass.value=="" || obj.BoardClass.value==0){
    alert("请选择问题分类");return false;
  }
}