function getStudent(student_id)
{
	if (window.XMLHttpRequest)
	  {// code for IE7+, Firefox, Chrome, Opera, Safari
	  xmlhttp=new XMLHttpRequest();
	  }
	else
	  {// code for IE6, IE5
	  xmlhttp=new ActiveXObject("Microsoft.XMLHttp");
	  }
	xmlhttp.onreadystatechange=function()
	  {
	  if (xmlhttp.readyState==4 && xmlhttp.status==200)
	    {
	    //document.getElementById("full_name").innerHTML=xmlhttp.responseText;
	    	document.getElementById("full_name").value=xmlhttp.responseText;
	    }
 	else
        {
           document.getElementById("loading").innerHTML="<img src=\"images/loading.gif\" />";
        }	   	  
	  }
	xmlhttp.open("GET","javascript/get-student.php?student_id="+student_id,true);
	xmlhttp.send();
}