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    Hi, I have made the following script (hybrid version of a couple of widely available scripts)

    This script is supposed to allow the div "alert" to be dragged arond, but the AJAX request is a script that displays "alert" only when there is some content to be displayed.

    index.php is:
    Code:
    <script>
    function HideContent(d) {
    if(d.length < 1) { return; }
    document.getElementById(d).style.display = "none";
    }
    function ShowContent(d) {
    if(d.length < 1) { return; }
    document.getElementById(d).style.display = "";
    }
    
    // Get base url
    url = document.location.href;
    xend = url.lastIndexOf("/") + 1;
    var base_url = url.substring(0, xend);
    
    function ajax_do (url) {
            // Does URL begin with http?
            if (url.substring(0, 4) != 'http') {
                    url = base_url + url;
            }
    
            // Create new JS element
            var jsel = document.createElement('SCRIPT');
            jsel.type = 'text/javascript';
            jsel.src = url;
    
            // Append JS element (therefore executing the 'AJAX' call)
            document.body.appendChild (jsel);
    }
    
    //*****************************************************************************
    // Do not remove this notice.
    //
    // Copyright 2001 by Mike Hall.
    // See http://www.brainjar.com for terms of use.
    //*****************************************************************************
    
    // Determine browser and version.
    
    function Browser() {
    
      var ua, s, i;
    
      this.isIE    = false;
      this.isNS    = false;
      this.version = null;
    
      ua = navigator.userAgent;
    
      s = "MSIE";
      if ((i = ua.indexOf(s)) >= 0) {
        this.isIE = true;
        this.version = parseFloat(ua.substr(i + s.length));
        return;
      }
    
      s = "Netscape6/";
      if ((i = ua.indexOf(s)) >= 0) {
        this.isNS = true;
        this.version = parseFloat(ua.substr(i + s.length));
        return;
      }
    
      // Treat any other "Gecko" browser as NS 6.1.
    
      s = "Gecko";
      if ((i = ua.indexOf(s)) >= 0) {
        this.isNS = true;
        this.version = 6.1;
        return;
      }
    }
    
    var browser = new Browser();
    
    // Global object to hold drag information.
    
    var dragObj = new Object();
    dragObj.zIndex = 0;
    
    function dragStart(event, id) {
    
      var el;
      var x, y;
    
      // If an element id was given, find it. Otherwise use the element being
      // clicked on.
    
      if (id)
        dragObj.elNode = document.getElementById(id);
      else {
        if (browser.isIE)
          dragObj.elNode = window.event.srcElement;
        if (browser.isNS)
          dragObj.elNode = event.target;
    
        // If this is a text node, use its parent element.
    
        if (dragObj.elNode.nodeType == 3)
          dragObj.elNode = dragObj.elNode.parentNode;
      }
    
      // Get cursor position with respect to the page.
    
      if (browser.isIE) {
        x = window.event.clientX + document.documentElement.scrollLeft
          + document.body.scrollLeft;
        y = window.event.clientY + document.documentElement.scrollTop
          + document.body.scrollTop;
      }
      if (browser.isNS) {
        x = event.clientX + window.scrollX;
        y = event.clientY + window.scrollY;
      }
    
      // Save starting positions of cursor and element.
    
      dragObj.cursorStartX = x;
      dragObj.cursorStartY = y;
      dragObj.elStartLeft  = parseInt(dragObj.elNode.style.left, 10);
      dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  10);
    
      if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = 0;
      if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = 0;
    
      // Update element's z-index.
    
      dragObj.elNode.style.zIndex = ++dragObj.zIndex;
    
      // Capture mousemove and mouseup events on the page.
    
      if (browser.isIE) {
        document.attachEvent("onmousemove", dragGo);
        document.attachEvent("onmouseup",   dragStop);
        window.event.cancelBubble = true;
        window.event.returnValue = false;
      }
      if (browser.isNS) {
        document.addEventListener("mousemove", dragGo,   true);
        document.addEventListener("mouseup",   dragStop, true);
        event.preventDefault();
      }
    }
    
    function dragGo(event) {
    
      var x, y;
    
      // Get cursor position with respect to the page.
    
      if (browser.isIE) {
        x = window.event.clientX + document.documentElement.scrollLeft
          + document.body.scrollLeft;
        y = window.event.clientY + document.documentElement.scrollTop
          + document.body.scrollTop;
      }
      if (browser.isNS) {
        x = event.clientX + window.scrollX;
        y = event.clientY + window.scrollY;
      }
    
      // Move drag element by the same amount the cursor has moved.
    
      dragObj.elNode.style.left = (dragObj.elStartLeft + x - dragObj.cursorStartX) + "px";
      dragObj.elNode.style.top  = (dragObj.elStartTop  + y - dragObj.cursorStartY) + "px";
    
      if (browser.isIE) {
        window.event.cancelBubble = true;
        window.event.returnValue = false;
      }
      if (browser.isNS)
        event.preventDefault();
    }
    
    function dragStop(event) {
    
      // Stop capturing mousemove and mouseup events.
    
      if (browser.isIE) {
        document.detachEvent("onmousemove", dragGo);
        document.detachEvent("onmouseup",   dragStop);
      }
      if (browser.isNS) {
        document.removeEventListener("mousemove", dragGo,   true);
        document.removeEventListener("mouseup",   dragStop, true);
      }
    }
    
    //]]>
    </script>
    <html>
    <head>
    <title>Untitled Document</title>
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    </head>
    
    <body>
    <div title="alert" id="alert">
    <table border="0" cellpadding="0" cellspacing="0">
      <tr>
        <td><div id="drag" onmousedown="dragStart(event,'alert')"><img src="top.gif" width="400" height="37" border="0" usemap="#Map"></div></td>
      </tr>
      <tr>
        <td background="row.gif">
    <table width="367" border="0" align="center">
            <tr>
              <td><div id="contentdiv"></div>
                  </td>
            </tr>
          </table></td>
      </tr>
      <tr>
        <td><img src="bottom.gif" width="400" height="18"></td>
      </tr>
    </table>
    </div>
    <script>HideContent('alert')</script>
    <map name="Map">
      <area shape="rect" coords="371,5,384,19" href="javascript:HideContent('alert')">
    </map>
    </body>
    </html>
    (Apologies for posting full thing, the problem may be anywhere!)

    and page1.php is:

    Code:
    <?php
    
    $html = 'This content is grabbed from the server';
    
    if($html)
    	{
    ?>
    
    div = document.getElementById('contentdiv');
    div.innerHTML = '<?php echo $html; ?>';
    
    document.getElementById('alert').style.display = "";
    
    <?
    }
    ?>
    I have 2 problems with this:

    1) The box will not drag around
    2) I cannot figure out how to get the AJAX request to be sent every 30 seconds, as I wish the script to do this.

    Any help/pointers would be greatly appreciated!
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