var xmlhttp=false;
function MakeRequest(url, handler)
{
        var 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 = eval(handler);
    http_request.open('GET', url, true);
	http_request.setRequestHeader('Accept','text/html');
	//http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	http_request.send(null);
}
function MyDefaultTab()
{	
	if (xmlhttp.readyState==4) {
    	//alert(xmlhttp.responseText)
	}
}