function GetXmlHttpObject()
		{
			var xmlHttp=null;
			try
			{
			// Firefox, Opera 8.0+, Safari
			xmlHttp=new XMLHttpRequest();
			}
			catch (e)
			{
				//Internet Explorer
				try
				{
				xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
				}
				catch (e)
				{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
				}
			}
			return xmlHttp;
		}

function count(val)
	{
		xmlHttp=GetXmlHttpObject();
		if(xmlHttp==null)
		{
			alert("Your browser does not support AJAX!");
			return;
		}
		var url="ajax-php/count.php?q="+val;
		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
	}
	function stateChanged() 
	{ 
		if (xmlHttp.readyState==4)
		{
			  var str=xmlHttp.responseText;	
			 if(str=='invalid')
			 {
				window.location.href='registration.php';
			 }
		}
	}