function xmlhttpPost(filename, arguments, divID, redirect_to) {	

	document.getElementById(divID).style.display = "block" ;
	document.getElementById(divID).innerHTML = "Logging in...<img src='images/ajax-loader.gif' border='0'>";

	var url = filename;
	var posData = "?" + arguments;


	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) {}
		}
	}

	http_request.onreadystatechange = function() { callBackFunction(http_request, divID, redirect_to); };
	http_request.open('GET', url + posData, true);
	http_request.send(null);
}



function callBackFunction(http_request, divID, redirect_to){
	
	if (http_request.readyState == 4) {
            if (http_request.status == 200) 
			{
				resText = http_request.responseText;
				if(resText == '1')
				{
					location.replace(redirect_to);
				}else{
					document.getElementById(divID).innerHTML = resText;
				}
            } else {
                document.getElementById(divID).innerHTML = 'Error while requesting to the server';
            }
        }
}



function onKeyPressBlockNumbers(e)
{
	var key = window.event ? e.keyCode : e.which;
	var keychar = String.fromCharCode(key);
	alert(key);
	reg = /\d/;
	return !reg.test(keychar);
}

function getKeyCode(e)
{
	var key = window.event ? e.keyCode : e.which;
	if(key == 13)
	{
		if(validate())
			document.login.submit();
	}
}