// JavaScript Document

    var http_request = false;
        
    function tabRequest(url) {
			
		var ges_ann = document.all? document.all['ges_ann'] : document.getElementById('ges_ann');
	    var ges_lin = document.all? document.all['ges_lin'] : document.getElementById('ges_lin');
	    var ges_son = document.all? document.all['ges_son'] : document.getElementById('ges_son');
			
		var classSelect = url.substring(0,3)+"_"+url.substring(3,6);
		var classSelect = classSelect.toLowerCase();
	
		if(classSelect=='ges_ann'){
				ges_ann.className="selected";
				ges_lin.className="";
				ges_son.className="";
				
			}else if(classSelect=='ges_lin'){
				ges_ann.className="";
				ges_lin.className="selected";
				ges_son.className="";
			}else if(classSelect=='ges_son'){
				ges_ann.className="";
				ges_lin.className="";
				ges_son.className="selected";
			}	

        http_request = false;

        if (window.XMLHttpRequest) { // Mozilla, Safari,...
            http_request = new XMLHttpRequest();
            if (http_request.overrideMimeType) {
                http_request.overrideMimeType('text/xml');
                // See note below about this line
            }
        } 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 = alertContents2;
        http_request.open('GET', url, true);
        http_request.send(null);

    }

    function alertContents2() {

        if (http_request.readyState == 4) {
            if (http_request.status == 200) {
              var e = document.getElementById("ajaxcontentarea")
			   
			 e.innerHTML = http_request.responseText;
            } else {
                alert('There was a problem with the request.');
            }
        }

    }