function chk_imgclick(){
    var $isChecked = $("#is_image").is(":checked");
    if($('#is_image').is(':checked')) { 
        var reg1 = new RegExp("&","g");//g,表示全部替换。 需要将这连个特殊字符曲调才可以
        var reg2 = new RegExp("[?]","g");//g,?是特殊字符，必须[]
         article_content = "article_content=" + UE.getEditor('ed1').getContent(); 
         article_content= article_content.replace(reg1,"");
         article_content= article_content.replace(reg2,"");
 
          $.ajax({
          type: "POST",
          url: "
        dataType:'json',
        data: article_content,
              success:function(result) {
                    if(result.status == true) { 
                      // alert(result.image_url); 
                        
                       $("#image_url").val(result.image_url);
                    }else{
                       alert('没有提交成功');                        
                    }
                },
                error: function(XMLHttpRequest, textStatus) {
                alert("页面请求错误，请检查重试或联系管理员！\n" + textStatus);
             //  setTimeout("success_opennewwindow()",500);
                 }
      });
    }
}