var http_request = false;

            function makeRequest(url,query) 
			{
                http_request = false;

                if (window.XMLHttpRequest) { // Mozilla, Safari,...
                    http_request = new XMLHttpRequest();
                    if (http_request.overrideMimeType) {
                        http_request.overrideMimeType('text/xml');
                    }
                } else if (window.ActiveXObject) { // IE
                    try {
                        http_request = new ActiveXObject("Msxml2.XMLHTTP");
                    } catch (e) {
                        try {
                        http_request = new ActiveXObject("Microsoft.XMLHTTP");
                        } catch (e) {}
                    }
                }

                if (!http_request) 
				  {
                    alert('Giving up :( Cannot create an XMLHTTP instance');
                    return false;
                  }
                http_request.onreadystatechange = alertContents;
                //alert(url+query);
				http_request.open('GET', 'http://e-agro.eu/' + url+query, true);
                http_request.send(null);

            }

            function alertContents() 
			 {
                if (http_request.readyState == 4) {
                    if (http_request.status == 200) {
                        //alert(http_request.responseText);
						document.getElementById('tab_main' ).innerHTML=http_request.responseText;
                    } else {
                        alert('There was a problem with the request.');
                    }
                }

            }