// JavaScript Document
var xmlHttp
function check()
{
	xmlHttp=GetXmlHttpObject();
	var name=document.getElementById('username').value;
		if (xmlHttp==null)
 	{
 	 alert ("Your browser does not support AJAX!");
	  return;
 	} 
 	var url="reg_check.php";
	url=url+"?username="+name;
	url=url+"&sid="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
/*var url="view_question.php";
url=url+"?que_article="+que_article+"&que_date="+que_date;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);*/
}

function stateChanged() 
{ 
	if (xmlHttp.readyState==4)
	{ 
		document.getElementById("work").innerHTML=xmlHttp.responseText;
//document.form1.load;
//window.location.reload(true);
//alert(xmlHttp.responseText);
	}
}

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;
}// JavaScript Document