function postRequest(strURL){
var xmlHttp;
if(window.XMLHttpRequest){ // For Mozilla, Safari, ...
var xmlHttp = new XMLHttpRequest();
}
else if(window.ActiveXObject){ // For Internet Explorer
var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttp.open('POST', strURL, true);
xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xmlHttp.onreadystatechange = function(){
if (xmlHttp.readyState == 4){
updatepage(xmlHttp.responseText);
}
}
xmlHttp.send(strURL);
}

function divswitchto(x,state)
	{
	if (document.all)
		{ //IS IE 4 or 5 (or 6 beta)
		eval('document.all.' + x + '.style.display = state');
		}
	if (document.layers)
		{ //IS NETSCAPE 4 or below
		document.layers[x].display = state;
		}
	if (document.getElementById &&!document.all)
		{
		hza = document.getElementById(x);
		hza.style.display = state;
		}
	}

function updatepage(str)
{
	switch(str)
	{
		case 'Uname:A':
		div = document.getElementById('ucheck');
		div.innerHTML = "";
		div = document.getElementById('valid');
		div.innerHTML = "<img src='imgs/valid.gif' start='fileopen'>";
		break;
		
		case 'Uname:NA':
		div = document.getElementById('valid');
		div.innerHTML = "";
		div = document.getElementById('ucheck');
		div.innerHTML = "<img src='imgs/navailable.gif' start='fileopen'>";
		break;
		
		case 'Error':
		div = document.getElementById('valid');
		div.innerHTML = "";
		div = document.getElementById('ucheck');
		div.innerHTML = "Hacking attempt detected";
		break;
		
	}
}