var httprequest	
	
///////////////////////////////////////////////////////////
	function check(id,value)
	{
		httprequest=HttpObject()
		if (httprequest==null)  
		{
			alert ("Browser does not support HTTP Request")
			return
		}
		
		if(id == 'username'){
			var url="check_data.php?"+"username="+value;
			httprequest.onreadystatechange=stateuser;
		}else{
			var url="check_data.php?"+"websiteurl="+value;
			httprequest.onreadystatechange=stateweb;
		}
				
		httprequest.open("GET",url,true);
		httprequest.send(null);
	}
///////////////////////////////////////////////////////////
	
	function stateuser() 
	{
		if (httprequest.readyState==4 || httprequest.readyState=="complete")
		{ 
			var my_str = httprequest.responseText;
			var myArr = my_str.split("~");
					
			if(myArr[1] == "user"){
				document.getElementById("usererr").innerHTML = myArr[0];
				return false;
			}else{
				document.getElementById("usererr").innerHTML = "";
			}
		}
	}
	
	function stateweb() 
	{
		if (httprequest.readyState==4 || httprequest.readyState=="complete")
		{ 
			var my_str = httprequest.responseText;
			var myArr = my_str.split("~");
			
			if(myArr[1] == "weburl"){
				document.getElementById("weburl").innerHTML = myArr[0];
				return false;
			}else{
				document.getElementById("weburl").innerHTML = "";
			}
		}
	}

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