function doLogin(obj)
{
  $(obj).attr('disabled', true);
  $(obj).val("Processing...");
  var username = $("#username").val();
  var password = $("#password").val();
  var remember = $("#remember").attr("checked");
  password = encPass(password);
  var params = {username: username, password: password, remember: remember};

  var url = "/do/doLogin.php";
  $.post(url, params, function(result) {
	    if(result.length > 0)
		{
		  $(obj).removeAttr('disabled').get();
		  $(obj).val("Submit");
          error(result);
		}
		else
		{
	      location.reload();
		}
	}
  );
}

function checkLoginKey(obj, e)
{
  var keynum;
  var keychar;
  var numcheck;

  if(window.event) // IE
  {
    keynum = e.keyCode;
  }
  else if(e.which) // Netscape/Firefox/Opera
  {
    keynum = e.which;
  }

  if(keynum == 13)
    doLogin(obj);
}

function checkSearchKey(obj, e)
{
  var keynum;
  var keychar;
  var numcheck;

  if(window.event) // IE
  {
    keynum = e.keyCode;
  }
  else if(e.which) // Netscape/Firefox/Opera
  {
    keynum = e.which;
  }

  if(keynum == 13)
    $('#formSearch').get().submit();
}

function swapFields(show, hide)
{
  //show.each(function(s){$(s).css('display', 'inline';}));
  //hide.each(function(s){$(s).css('display', 'none';}));
}





function clearField(obj, text, className)
{
  if(obj.value == text)
  {
    obj.value = "";
    obj.className = className;
  }
}

function resetField(obj, text, className)
{
  if(obj.value == "")
  {
    obj.value = text;
    obj.className = className;
  }
}

function hideField(obj, text, displayID, focus)
{
  if(obj.value == text)
  {
    obj.css('display', "none");
    document.getElementById(displayID).css('display', "inline");
    if(focus)
      document.getElementById(displayID).focus();
  }
}

function showLoginWindow()
{
  $('body').css('overflow', "hidden");

  //var elt         = $('#loginWindow').get();
  
  // retrieve required dimensions
  //var eltDims     = elt.getDimensions();
  
  var height = 400;
  var width = 600;
  var windowHeight = $(window).height();
  var windowWidth = $(window).width();

  // calculate the center of the page using the browser and element dimensions
  //var viewport = document.viewport.getDimensions();
  var y  = windowHeight/2-height/2; //(browserDims.height - eltDims.height) / 2;
  var x = windowWidth/2-width/2; //(browserDims.width - eltDims.width) / 2;

  // set the style of the element so it is centered
  var styles = {
      display  : 'block',
      position : 'absolute',
      top      : y + 'px',
      left     : x + 'px',
      color    : '#FFFFFF',
      backgroundColor : '#292929',
      width : width+'px',
      height : height+'px',
      zIndex : 6
  };
  
  $('#loginWindow').css(styles);

  styles = {
      display : 'block',
      position : 'absolute',
      top      : 0 + 'px',
      left     : 0 + 'px',
      backgroundColor : '#000000',
      width : windowWidth+'px',
      height : '4096px',
      zIndex : 5
  };

  $('#loginVeil').css(styles);
  $('#loginVeil').css('opacity', 0.7);

  $('#username').focus();
  return false;
}

function hideLoginWindow()
{
  $('body').css('overflow', "auto");
  $('#loginWindow').css('display', 'none');
  $('#loginVeil').css('display', 'none');
}

function success(text, errorID, successID)
{
    if(typeof errorID == "undefined")
        errorID = "errors";
    if(typeof successID == "undefined")
        successID = "success";
    var d = new Date();
    text += "<br />("+d.getHours()+":"+d.getMinutes()+":"+d.getSeconds()+")";
    var success = $('#'+successID);
    var errors = $('#'+errorID);
    success.html(text);
    success.css('display', 'none');
    success.fadeIn('slow');
    errors.html("");
    errors.css('display', 'none');
}

function error(text, errorID, successID)
{
    if(typeof errorID == "undefined")
        errorID = "errors";
    if(typeof successID == "undefined")
        successID = "success";
    var d = new Date();
    text += "("+d.getHours()+":"+d.getMinutes()+":"+d.getSeconds()+")";
    var success = $('#'+successID);
    var errors = $('#'+errorID);
    errors.html(text);
    errors.css('display', 'none');
    errors.fadeIn('slow');
    errors.css('position', 'relative');
    success.html("");
    success.css('display', 'none');
}

/*
 * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
 * in FIPS PUB 180-1
 * Version 2.1a Copyright Paul Johnston 2000 - 2002.
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for details.
 */

/*
 * Configurable variables. You may need to tweak these to be compatible with
 * the server-side, but the defaults work in most cases.
 */
var hexcase = 0;  /* hex output format. 0 - lowercase; 1 - uppercase        */
var b64pad  = ""; /* base-64 pad character. "=" for strict RFC compliance   */
var chrsz   = 8;  /* bits per input character. 8 - ASCII; 16 - Unicode      */

/*
 * These are the functions you'll usually want to call
 * They take string arguments and return either hex or base-64 encoded strings
 */
function hex_sha1(s){return binb2hex(core_sha1(str2binb(s),s.length * chrsz));}
function b64_sha1(s){return binb2b64(core_sha1(str2binb(s),s.length * chrsz));}
function str_sha1(s){return binb2str(core_sha1(str2binb(s),s.length * chrsz));}
function hex_hmac_sha1(key, data){ return binb2hex(core_hmac_sha1(key, data));}
function b64_hmac_sha1(key, data){ return binb2b64(core_hmac_sha1(key, data));}
function str_hmac_sha1(key, data){ return binb2str(core_hmac_sha1(key, data));}

/*
 * Perform a simple self-test to see if the VM is working
 */
function sha1_vm_test()
{
  return hex_sha1("abc") == "a9993e364706816aba3e25717850c26c9cd0d89d";
}

/*
 * Calculate the SHA-1 of an array of big-endian words, and a bit length
 */
function core_sha1(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << (24 - len % 32);
  x[((len + 64 >> 9) << 4) + 15] = len;

  var w = Array(80);
  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;
  var e = -1009589776;

  for(var i = 0; i < x.length; i += 16)
  {
    var olda = a;
    var oldb = b;
    var oldc = c;
    var oldd = d;
    var olde = e;

    for(var j = 0; j < 80; j++)
    {
      if(j < 16) w[j] = x[i + j];
      else w[j] = rol(w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16], 1);
      var t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)),
                       safe_add(safe_add(e, w[j]), sha1_kt(j)));
      e = d;
      d = c;
      c = rol(b, 30);
      b = a;
      a = t;
    }

    a = safe_add(a, olda);
    b = safe_add(b, oldb);
    c = safe_add(c, oldc);
    d = safe_add(d, oldd);
    e = safe_add(e, olde);
  }
  return Array(a, b, c, d, e);

}

/*
 * Perform the appropriate triplet combination function for the current
 * iteration
 */
function sha1_ft(t, b, c, d)
{
  if(t < 20) return (b & c) | ((~b) & d);
  if(t < 40) return b ^ c ^ d;
  if(t < 60) return (b & c) | (b & d) | (c & d);
  return b ^ c ^ d;
}

/*
 * Determine the appropriate additive constant for the current iteration
 */
function sha1_kt(t)
{
  return (t < 20) ?  1518500249 : (t < 40) ?  1859775393 :
         (t < 60) ? -1894007588 : -899497514;
}

/*
 * Calculate the HMAC-SHA1 of a key and some data
 */
function core_hmac_sha1(key, data)
{
  var bkey = str2binb(key);
  if(bkey.length > 16) bkey = core_sha1(bkey, key.length * chrsz);

  var ipad = Array(16), opad = Array(16);
  for(var i = 0; i < 16; i++)
  {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5C5C5C5C;
  }

  var hash = core_sha1(ipad.concat(str2binb(data)), 512 + data.length * chrsz);
  return core_sha1(opad.concat(hash), 512 + 160);
}

/*
 * Add integers, wrapping at 2^32. This uses 16-bit operations internally
 * to work around bugs in some JS interpreters.
 */
function safe_add(x, y)
{
  var lsw = (x & 0xFFFF) + (y & 0xFFFF);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xFFFF);
}

/*
 * Bitwise rotate a 32-bit number to the left.
 */
function rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}

/*
 * Convert an 8-bit or 16-bit string to an array of big-endian words
 * In 8-bit function, characters >255 have their hi-byte silently ignored.
 */
function str2binb(str)
{
  var bin = Array();
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < str.length * chrsz; i += chrsz)
    bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (32 - chrsz - i%32);
  return bin;
}

/*
 * Convert an array of big-endian words to a string
 */
function binb2str(bin)
{
  var str = "";
  var mask = (1 << chrsz) - 1;
  for(var i = 0; i < bin.length * 32; i += chrsz)
    str += String.fromCharCode((bin[i>>5] >>> (32 - chrsz - i%32)) & mask);
  return str;
}

/*
 * Convert an array of big-endian words to a hex string.
 */
function binb2hex(binarray)
{
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i++)
  {
    str += hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8+4)) & 0xF) +
           hex_tab.charAt((binarray[i>>2] >> ((3 - i%4)*8  )) & 0xF);
  }
  return str;
}

/*
 * Convert an array of big-endian words to a base-64 string
 */
function binb2b64(binarray)
{
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var str = "";
  for(var i = 0; i < binarray.length * 4; i += 3)
  {
    var triplet = (((binarray[i   >> 2] >> 8 * (3 -  i   %4)) & 0xFF) << 16)
                | (((binarray[i+1 >> 2] >> 8 * (3 - (i+1)%4)) & 0xFF) << 8 )
                |  ((binarray[i+2 >> 2] >> 8 * (3 - (i+2)%4)) & 0xFF);
    for(var j = 0; j < 4; j++)
    {
      if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
      else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
    }
  }
  return str;
}


function encPass(val)
{
  return hex_sha1(val);
}


function doSaveSettings(obj, id)
{
    var stickied = $('#sticky_'+id).attr("checked");
    var locked = $('#lock_'+id).attr("checked");
 
    stickied ? stickied = 1 : stickied = 0;
    locked   ? locked   = 1 : locked   = 0;
    
    $('#'+obj.id).attr('disabled', true);
    $('#'+obj.id).val("Processing...");

    var url = "/do/doSaveSettings.php";
	var token = $('#antixsrf').val();
    var params = {topicID: id, stickied: stickied, locked: locked, token: token};

    $.post(url, params, function(result) {
         ajaxReload();
      }
    );

}

function doDeleteForumtopic(obj, id)
{
  if(confirm('Are you sure you want to delete this topic?'))
  {
    $('#'+obj.id).attr('disabled', true);
    $('#'+obj.id).val("Processing...");

    var url = "/do/doDeleteForumtopic.php";
    var token = $('#antixsrf').val();
    var params = {topicID: id, token: token};

    $.post(url, params, function(result) {
          ajaxReload();
      }
    );
  }
}