function random_string() {
  var random = Math.random()*4 + Math.random()*2 + Math.random()*6 + Math.random()*10;
  return random;
}

function loadFragmentInToElement(fragment_url, element_id) {
  var xmlhttp=false;
  /*@cc_on @*/
  /*@if (@_jscript_version >= 5)
  // JScript gives us Conditional compilation, we can cope with old IE versions.
  // and security blocked creation of the objects.
   try {
    xmlhttp = new ActiveXObject("Msxml.XMLHTTP");
   } catch (e) {
    try {
     xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (E) {
     xmlhttp = false;
    }
   }
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
    xmlhttp = new XMLHttpRequest();
  }
    var element = document.getElementById(element_id);
    // element.innerHTML = ' ';
    xmlhttp.open("GET", fragment_url);
    xmlhttp.onreadystatechange = function() {
        if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
            element.innerHTML = xmlhttp.responseText;
        }
    }
    xmlhttp.send(null);
}

function comment_drop(post,id) {
  valid_user = confirm('Voulez-vous vraiment supprimer ce commentaire ?\nAttention, cette action est irréversible!');
  if(valid_user == 1) {
    fragment = 'async.php?drop_comment=' + id + '&post=' + post;
    loadFragmentInToElement(fragment, 'box_comments');
  }
}

function post_drop(post,context) {
  valid_user = confirm('Voulez-vous vraiment supprimer cet article ?\nTous les commentaires liés à cet article seront perdus.\nAttention, cette action est irréversible!');
  if(valid_user == 1) {
    fragment = 'async.php?drop_post=' + post + '&context=' + context;
    block = 'post_' + post;
    loadFragmentInToElement(fragment, block);
  }
}

function new_post() {
  loadFragmentInToElement('async.php?write', 'box_content');
}

function post_edit(post) {
  block = 'post_' + post;
  loadFragmentInToElement('async.php?edit=' + post, block);
}