var textContent = "";

function getFile(numRow, numCol)
{
	var xmlhttp;
	if (window.XMLHttpRequest)
	{// code for IE7+, Firefox, Chrome, Opera, Safari
	  	xmlhttp=new XMLHttpRequest();
	}
	else
	{// code for IE6, IE5
	  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	xmlhttp.open("GET","images/"+numRow+","+numCol+"/config.txt",true);
		xmlhttp.onreadystatechange=function()
		{
		  if (xmlhttp.readyState==4 && xmlhttp.status==200)
		  {
			textContent=xmlhttp.responseText;
			receive(textContent, numRow, numCol);
			return;
		  }
		}
	
	xmlhttp.send(null);
}