$(document).ready(function(){
            $('#btn_save').bind('click',function(){   
                checkUserInput();            
            });
        });
        function RefreshImage()
        {
            var el =document.getElementById("Image1");
            el.src=el.src+'?';
        }
        
        function checkUserInput()
        {
            
            
            if($('#txt_name').val() == '')
            {
                $('#txt_name').focus();
                alert('请输入姓名');
                return false;
            }
           
             if($('#txt_phone').val() == '')
            {
                $('#txt_phone').focus();
                alert('请输入电话');
                return false;
            }
            if($('#txt_phone').val().length > 20)
            {
                $('#txt_phone').focus();
                alert('电话号码最多只能输入20个字符');
                return false;
            } 
             if($('#txt_email').val() == '')
            {
                $('#txt_email').focus();
                alert('请输入地址');
                return false;
            }
            if($('#txt_content').val() == '')
            {
                $('#txt_content').focus();
                alert('请输入内容');
                return false;
            }
            

            var txt_name=$('#txt_name').val();
            var txt_title=$('#txt_name').val();
            var txt_email=$('#txt_email').val();
            var txt_phone=$('#txt_phone').val();
            var txt_content=$('#txt_content').val();

            var command='add';
           // return true;
            
            $.ajax({url: 'ashx/message.ashx',  
            type: 'post',  
            data:{command:command,PartId:25,name:txt_name,title:txt_title,email:txt_email,phone:txt_phone,content:txt_content}, 
            cache: false,
            error: function(result){alert(result);},  
            success: function(result){
             
                alert(result);
                if(result=='验证码错误')
                {
                     $('#chkcode').val("");
                }
                else
                {
                    $('#txt_title').val("");
                    $('#txt_name').val("");
                    $('#txt_email').val("");
                    $('#txt_phone').val("");
                    $('#txt_content').val("");
                    $('#chkcode').val("");
                }
            }  
             });
            
        }
        function feedbook_onclick() {

}