var http_request = false;

   function show_com() {
     var ds = document.getElementById('commentssection1');
     var ds2 = document.getElementById('videosgrid');
     if (ds.style.display == 'block') {
       ds.style.display = 'none';
       ds2.style.display = 'block';
     } else {
       ds.style.display = 'block';
       ds2.style.display = 'none';
     }
   };   
   
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         //alert(http_request.responseText);
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            alert(result);
            //document.getElementById(div).innerHTML = result;            
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
   
   function postComment(obj,videoid) {
      var poststr = "id=" + encodeURI( document.getElementById("id").value ) +
                    "&comment=" + encodeURI( document.getElementById("commenttext").value ) +
					"&name=" + encodeURI( document.getElementById("commentname").value );
      //alert(poststr);
      makePOSTRequest('/post_comment/'+videoid, poststr);
      if (document.getElementById("commenttext")) {
        document.getElementById("commenttext").value='';
      } else { alert('bad html3'); }
   }

   function postCommentReply(obj,videoid,commentid,parentid) {
      var poststr = "id=" + encodeURI( document.getElementById("id").value ) +
                "&comment=" + encodeURI( document.getElementById("commenttext_"+commentid).value ) +
		"&name=" + encodeURI( document.getElementById("commentname").value ) +
		"&parent_id=" + encodeURI( parentid );
      //alert(poststr);
      makePOSTRequest('/post_comment/'+videoid, poststr);
      if (document.getElementById("commenttext_"+commentid)) {
        document.getElementById("commenttext_"+commentid).value='';
      } else { alert('bad html1'); }
      if (document.getElementById("postreply_"+commentid)) {
        document.getElementById("postreply_"+commentid).style.dsiplay='none';
      } else { alert('bad html2'); }
   }