求解决一个JS代码的问题~!!!!

function GetClassPurview()
{
   document.form1.ClassInputer_Article.value="";
        document.form1.ClassChecker_Article.value="";
        document.form1.ClassMaster_Article.value="";
        if(document.form1.Purview_Article[2].checked==true){
                for(var i=0;i<frmArticle.document.myform.Purview_Add.length;i++){
                        if (frmArticle.document.myform.Purview_Add.checked==true){
                                if (document.form1.ClassInputer_Article.value=="")
                                        document.form1.ClassInputer_Article.value=frmArticle.document.myform.Purview_Add.value;
                                else
                                        document.form1.ClassInputer_Article.value+=","+frmArticle.document.myform.Purview_Add.value;
                        }
                }
                for(var i=0;i<frmArticle.document.myform.Purview_Check.length;i++){
                        if (frmArticle.document.myform.Purview_Check.checked==true){
                                if (document.form1.ClassChecker_Article.value=="")
                                        document.form1.ClassChecker_Article.value=frmArticle.document.myform.Purview_Check.value;
                                else
                                        document.form1.ClassChecker_Article.value+=","+frmArticle.document.myform.Purview_Check.value;
                        }
                }
                for(var i=0;i<frmArticle.document.myform.Purview_Manage.length;i++){
                        if (frmArticle.document.myform.Purview_Manage.checked==true){
                                if (document.form1.ClassMaster_Article.value=="")
                                        document.form1.ClassMaster_Article.value=frmArticle.document.myform.Purview_Manage.value;
                                else
                                        document.form1.ClassMaster_Article.value+=","+frmArticle.document.myform.Purview_Manage.value;
                        }
                }
        }
    document.form1.ClassInputer_Soft.value="";
        document.form1.ClassChecker_Soft.value="";
        document.form1.ClassMaster_Soft.value="";
        if(document.form1.Purview_Soft[2].checked==true){
                for(var i=0;i<frmSoft.document.myform.Purview_Add.length;i++){
                        if (frmSoft.document.myform.Purview_Add.checked==true){
                                if (document.form1.ClassInputer_Soft.value=="")
                                        document.form1.ClassInputer_Soft.value=frmSoft.document.myform.Purview_Add.value;
                                else
                                        document.form1.ClassInputer_Soft.value+=","+frmSoft.document.myform.Purview_Add.value;
                        }
                }
                for(var i=0;i<frmSoft.document.myform.Purview_Check.length;i++){
                        if (frmSoft.document.myform.Purview_Check.checked==true){
                                if (document.form1.ClassChecker_Soft.value=="")
                                        document.form1.ClassChecker_Soft.value=frmSoft.document.myform.Purview_Check.value;
                                else
                                        document.form1.ClassChecker_Soft.value+=","+frmSoft.document.myform.Purview_Check.value;
                        }
                }
                for(var i=0;i<frmSoft.document.myform.Purview_Manage.length;i++){
                        if (frmSoft.document.myform.Purview_Manage.checked==true){
                                if (document.form1.ClassMaster_Soft.value=="")
                                        document.form1.ClassMaster_Soft.value=frmSoft.document.myform.Purview_Manage.value;
                                else
                                        document.form1.ClassMaster_Soft.value+=","+frmSoft.document.myform.Purview_Manage.value;
                        }
                }
        }
        document.form1.ClassInputer_Photo.value="";
        document.form1.ClassChecker_Photo.value="";
        document.form1.ClassMaster_Photo.value="";
    if(document.form1.Purview_Photo[2].checked==true){
                for(var i=0;i<frmPhoto.document.myform.Purview_Add.length;i++){
                        if (frmPhoto.document.myform.Purview_Add.checked==true){
                                if (document.form1.ClassInputer_Photo.value=="")
                                        document.form1.ClassInputer_Photo.value=frmPhoto.document.myform.Purview_Add.value;
                                else
                                        document.form1.ClassInputer_Photo.value+=","+frmPhoto.document.myform.Purview_Add.value;
                        }
                }
                for(var i=0;i<frmPhoto.document.myform.Purview_Check.length;i++){
                        if (frmPhoto.document.myform.Purview_Check.checked==true){
                                if (document.form1.ClassChecker_Photo.value=="")
                                        document.form1.ClassChecker_Photo.value=frmPhoto.document.myform.Purview_Check.value;
                                else
                                        document.form1.ClassChecker_Photo.value+=","+frmPhoto.document.myform.Purview_Check.value;
                        }
                }
                for(var i=0;i<frmPhoto.document.myform.Purview_Manage.length;i++){
                        if (frmPhoto.document.myform.Purview_Manage.checked==true){
                                if (document.form1.ClassMaster_Photo.value=="")
                                        document.form1.ClassMaster_Photo.value=frmPhoto.document.myform.Purview_Manage.value;
                                else
                                        document.form1.ClassMaster_Photo.value+=","+frmPhoto.document.myform.Purview_Manage.value;
                        }
                }
        }
}
只有Article这一项可以将值传递到隐藏文本框,其他的都不行啊~~~求解决办法啊!!!!