未找到。 在此服务器上找不到请求的URL /print_dokument.php

I want to display filtered data from my database table named "table1" (criteria: id,date1,date2), using javascript/jquery script. Results must be shown in new window. Everything is ok to the moment when new window is opened. Then, the error occurs as follow:

Not Found

The requested URL /mydoc.php was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

My code:

function ShowMyDocument(){
    $.get("date_dialog.php",function(data){
        $("#myDiv").html(data); 
        ShowDate('date2'); //set default date to input field "date2" 
        var dat=new Date();
        dat.setDate(1);
        SetMyDate(dat,'date1'); //set default date to input field "date1"
        $("#date1").focus(); //for change date interval
        $("#myDiv").dialog('option','buttons',{
            "Show data": function(){
                var id=document.getElementById('id').innerHTML;
                var d1=mysqldate($("#date1").val());
                var d2=mysqldate($("#date2").val());
                var filterstr=encodeURIComponent("ID="+id+"&DATE1="+d1+"&DATE2="+d2);
                $("#myDiv").dialog("close");

This is problematic instruction

 var newwin = window.open('mysite.com/mydoc.php?'+filterstr,"_blank");

I'm try different options "mydoc.php", full path/mydoc.php and nothing changes.

            },
            "Cancel": function(){
                $("#myDiv").dialog("close");
            }
        });
        $("#myDiv").dialog('open');
    });
 }

NOTE: PHP file "mydoc.php" 100% exist in root folder of mysite.com.

Opening the new window should contain a full URL. So something like this:

var newwin = window.open('http://example.com/mydoc.php?'+filterstr,"_blank");

That should work. Or, you can make it shorter on the current domain like this:

var newwin = window.open('/mydoc.php?'+filterstr,"_blank");

In your case the mysite.com is seen as a directory on the current domain, and not as a domain.