function get_html_area($mid, $htid){
  var xmlHttp;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      try
        {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
      catch (e)
        {
        alert("Your browser does not support AJAX!");
        return false;
        }
      }
    }
	//
	xmlHttp.onreadystatechange=function()
    {
      if(xmlHttp.readyState==4)
      {
      		//alert(xmlHttp.responseText);
	  	document.getElementById("html_area").innerHTML = xmlHttp.responseText;
	  }
    }
	xmlHttp.open("GET","./get_html_area.php?mid="+$mid+"&htid="+$htid,true);
	xmlHttp.send(null);
	
}