// JavaScript Document
var fadehandle;
var opacity = 0;
function openLasarartikelvillkor()
{
	window.open ("http://markbladet.se/villkor_lasarartiklar.html","Villkor för läsarartiklar","location=0,status=0,scrollbars=1,width=600,height=600"); 
	return false;
}
function formatTitleGallery(title, currentArray, currentIndex, currentOpts) 
{
    return '<div id="fancy_text">' + title + '</div><div id="gallery_counter">Bild ' + (currentIndex + 1) + ' av ' + currentArray.length + '</div>';
}
function formatTitleMB(title) 
{
	formated = '';
	if(document.getElementById("fbmi_photographer").innerHTML!="")
		formated = formated + '<div id="fancy_photographer">Foto: ' + document.getElementById("fbmi_photographer").innerHTML + '</div>';
	if(title!='')
		formated = formated + '<div id="fancy_text">' + title + '</div>';
    return formated;
}
function formatTitleFirstA(title) 
{
	formated = '';
	if(document.getElementById("fba1_photographer").innerHTML!="")
		formated = formated + '<div id="fancy_photographer">Foto: ' + document.getElementById("fba1_photographer").innerHTML + '</div>';
	if(title!='')
		formated = formated + '<div id="fancy_text">' + title + '</div>';
    return formated;
}
function formatTitleSecondA(title) 
{
	formated = '';
	if(document.getElementById("fba2_photographer").innerHTML!="")
		formated = formated + '<div id="fancy_photographer">Foto: ' + document.getElementById("fba2_photographer").innerHTML + '</div>';
	if(title!='')
		formated = formated + '<div id="fancy_text">' + title + '</div>';
    return formated;
}
function checkEventLength()
{
	text = document.getElementById("eventtext").value;
	length = text.length;
	if(length>300)
	{
		alert("Texten får som längst vara 300 tecken vid publicering i Markbladets föreningskalender.");
		return false;
	}
	if(document.getElementById("paperpublish").checked==true)
		document.getElementById('char_count').innerHTML="Antal tecken: "+length+" <em>(Max 300 tecken)</em>";
	else
		document.getElementById('char_count').innerHTML="Antal tecken: "+length+" <em>(Max 300 tecken)</em>";
	return true;
}
function verifyEventForm()
{
	eventtitle = document.getElementById("eventtitle").value;
	eventtitle = eventtitle.trim();
	if(eventtitle=="")
	{
		alert("Du måste ange en rubrik för föreningshändelsen!");
		return false;
	}
	if(document.getElementById("date_element").value=="")
	{
		alert("Du måste välja ett datum för händelsen. Klicka på ett datum i kalendern för att markera händelsens datum.");
		return false;
	}
	if(document.getElementById("eventtext").value=="")
	{
		alert("Händelsen måste innehålla en text.");
		return false;
	}
	if(document.getElementById("paperpublish").checked==true && document.getElementById("paper_date").value=="")
	{
		alert("Det ligger redan tre händelser bokade för publicering i Markbladet denna vecka!");
		return false;
	}
	return true;
}
function counteventchars(source,destination)
{
		text = document.getElementById(source).value;
		length = text.length;
		if(document.getElementById("paperpublish").checked==true)
		{
			if(length>300)
			{
				text=text.substr(0,300);
				document.getElementById(source).value=text;
			}
		}
		else
		{
			if(length>200)
			{
				text=text.substr(0,300);
				document.getElementById(source).value=text;
			}
		}
		text = document.getElementById(source).value;
		length = text.length;
		if(document.getElementById("paperpublish").checked==true)
			document.getElementById(destination).innerHTML="Antal tecken: "+length+" <em>(Max 300 tecken)</em>";
		else
			document.getElementById(destination).innerHTML="Antal tecken: "+length+" <em>(Max 300 tecken)</em>";
}
function countcommentchars(source,maxlength)
{
		if(maxlength>0)
		{
			text = document.getElementById(source).value;
			length = text.length;
			if(length>maxlength)
			{
				text=text.substr(0,maxlength);
				document.getElementById(source).value=text;
			}
		}
}
function trackCS()
{
	searchstring=document.getElementById("SC").value;
	_gaq.push(['_trackEvent', 'Hitta Rätt', 'Sökningar', searchstring]);
}
function trackAS()
{
	searchstring=document.getElementById("AC").value;
	_gaq.push(['_trackEvent', 'Föreningsregistret', 'Sökningar', searchstring]);
}
function printBigAHAHCalender(query,date)
{
	try 
	{
		cal = new XMLHttpRequest(); /* e.g. Firefox */
	} 
	catch(e) 
	{
		try 
		{
			cal = new ActiveXObject("Msxml2.XMLHTTP");  /* some versions IE */
		} 
		catch (e) 
		{
			try 
			{
				cal = new ActiveXObject("Microsoft.XMLHTTP");  /* some versions IE */
			} 
			catch (E) 
			{
				cal = false;
			} 
		} 
	}
	myRand = parseInt(Math.random()*99999999);
	if(date!="")
		document.getElementById('date_element').value=date;
	cal.onreadystatechange = function() {responseBigAHAHCalender('big_calendar');};
	cal.open("GET",'http://markbladet.se/ahahcalender.php'+'?'+query+'&rand='+myRand,true);
	cal.send(null);
	
	return false;
}
function responseBigAHAHCalender(pageElement) 
{
	var output = '';
	if(cal.readyState == 4) 
	{
		if(cal.status == 200) 
		{
			output = cal.responseText;
			document.getElementById(pageElement).innerHTML=output;
		}
	}
}
function showmess(text)
{
		alert(text);
		return false;
}
function verifyArticlePublish(text)
{
	if(confirm(text))
	{
		return true;
	}
	return false;
}
function showMemberImage(url,photo,text)
{
	//	document.getElementById("popupimage").src=url;
		html = '<img id="popupimage" src="'+url+'" onclick="return closeMemberImage()">';
		if(photo!="")
			html = html +'<div align="right" style="margin-top:3px;">'+photo+'</div>';
		if(text!="")
			html = html +'<div id="popuptext" style="margin-top:10px;text-align:left;width:100%;">'+text+'</div>';
		document.getElementById("imageobject").innerHTML=html;
		if(text!="")
		document.getElementById("popuptext").style.width = document.getElementById("popupimage").offsetWidth+"px";
	/*	olle = document.getElementById("popupimage").offsetWidth;
		if(text!="")
			document.getElementById("popuptext").style.width=olle+"px";*/
	/*	viewportheight = window.innerHeight;
		viewportheight = viewportheight/2;
		top = document.getElementById("bigimagecontainer").offsetTop;
		bigimage = document.getElementById("bigimagecontainer").offsetHeight;
		bigimage=bigimage/2;
		viewportheight = viewportheight - bigimage;
		document.getElementById("bigimagecontainer").style.top=viewportheight+"px";
		alert(document.getElementById("bigimagecontainer").offsetHeight);
		alert(document.getElementById("bigimagecontainer").offsetHeight);*/
		document.getElementById("bigimagecontainer").style.visibility="visible";
		
		return false;
}
function closeMemberImage()
{
		document.getElementById("bigimagecontainer").style.visibility="hidden";
		return false;
}
function toggleCompanyItem(id)
{
	//	if(document.getElementById(company_opened+id).className)
		var element = 'company_opened'+id;
		var element2 = 'company_closed'+id;
		if(document.getElementById(element).className=="company_open_item")
		{
			document.getElementById(element).className="company_close_item";
			document.getElementById(element2).className="company_open_item";
		}
		else
		{
			document.getElementById(element).className="company_open_item";
			document.getElementById(element2).className="company_close_item";
		}
		document.getElementById(element).style.padding="5px";
		document.getElementById(element2).style.padding="5px";
		document.getElementById(element).style.borderTop="1px dotted grey";
		document.getElementById(element2).style.borderTop="1px dotted grey";
		
		return false;
}
function fullComment(fullcontent,shortcontent)
{
		document.getElementById(fullcontent).style.display="block";
		document.getElementById(shortcontent).style.display="none";
		return false;
}
function stopIntervall()
{
	clearInterval (commentIntervalId);
}
function callAHAH(url, query, pageElement, action) 
{
	try 
	{
		req = new XMLHttpRequest(); /* e.g. Firefox */
	} 
	catch(e) 
	{
		try 
		{
			req = new ActiveXObject("Msxml2.XMLHTTP");  /* some versions IE */
		} 
		catch (e) 
		{
			try 
			{
				req = new ActiveXObject("Microsoft.XMLHTTP");  /* some versions IE */
			} 
			catch (E) 
			{
				req = false;
			} 
		} 
	}
	myRand = parseInt(Math.random()*99999999);
	if(action=='update')
	{
		query = query +"&num_comment="+document.getElementById('num_comment').value;
		query = query +"&comment_order="+document.getElementById('comment_order').value;
		req.onreadystatechange = function() {responseAHAH(pageElement);};
		req.open("GET",url+'?'+query+'&rand='+myRand,true);
		req.send(null);
	}
	if(action=='post')
	{
		query = query +"&comment_parent="+document.getElementById('comment_parent').value;
		query = query +"&num_comment="+document.getElementById('num_comment').value;
		query = query +"&comment_order="+document.getElementById('comment_order').value;
		query = query +"&namn="+document.getElementById('namn').value;
		query = query +"&kommentar="+document.getElementById('kommentar').value;
		query = query +"&type="+document.getElementById('type').value;
		query = query +"&maxlength="+document.getElementById('maxlength').value;
		query = query +"&moderation="+document.getElementById('moderation').value;
		query = query +'&rand='+myRand;
		if(document.getElementById('moderation').value=='before')
			alert("Din kommentar är sparad och kommer granskas av Markbladets moderatorer innan publicering.");
		req.onreadystatechange = function() {responseAHAH(pageElement);};
		req.open("POST",url,true);
		req.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		req.send(query);
	}
	return false;
}
function responseAHAH(pageElement) 
{
	
	var output = '';
	if(req.readyState == 4) 
	{
		if(req.status == 200) 
		{
			output = req.responseText;
			if(output=='VIOLATION_STATUS')
			{
				alert("Du har redan gjort en anmälan av en kommentar.\r\nInnan en ny anmälan kan göras måste din befintliga anmälan granskas av våra moderatorer.");
				return;
			}
			if(output=='DUPLICATE_LIKE')
			{
				alert("Du har redan gillat den här kommentaren en gång.");
				return;
			}
			if(output=='DUPLICATE_ABUSE')
			{
				alert("Du har redan anmält den här kommentaren en gång.");
				return;
			}
			document.getElementById(pageElement).innerHTML = output;
		}
	}
}
function callsurveyAHAH(url) 
{
	try 
	{
		surv = new XMLHttpRequest(); /* e.g. Firefox */
	} 
	catch(e) 
	{
		try 
		{
			surv = new ActiveXObject("Msxml2.XMLHTTP");  /* some versions IE */
		} 
		catch (e) 
		{
			try 
			{
				surv = new ActiveXObject("Microsoft.XMLHTTP");  /* some versions IE */
			} 
			catch (E) 
			{
				surv = false;
			} 
		} 
	}
	myRand = parseInt(Math.random()*99999999);
	
		var message="";
		surv.onreadystatechange = function() {responsesurveyAHAH();};
		surv.open("GET",url+'&rand='+myRand,true);
		surv.send(null);
	return false;
}
function callsurveynarrowAHAH(url) 
{
	try 
	{
		narsurv = new XMLHttpRequest(); /* e.g. Firefox */
	} 
	catch(e) 
	{
		try 
		{
			narsurv = new ActiveXObject("Msxml2.XMLHTTP");  /* some versions IE */
		} 
		catch (e) 
		{
			try 
			{
				narsurv = new ActiveXObject("Microsoft.XMLHTTP");  /* some versions IE */
			} 
			catch (E) 
			{
				narsurv = false;
			} 
		} 
	}
	myRand = parseInt(Math.random()*99999999);
	
		var message="";
		narsurv.onreadystatechange = function() {responsesurveynarrowAHAH();};
		narsurv.open("GET",url+'&rand='+myRand,true);
		narsurv.send(null);
	return false;
}
function responsesurveyAHAH() 
{
	
	var output = '';
	if(surv.readyState == 4) 
	{
		if(surv.status == 200) 
		{
			output = surv.responseText;
			document.getElementById('survey').innerHTML = output;
		}
	}
}
function responsesurveynarrowAHAH() 
{
	
	var output = '';
	if(narsurv.readyState == 4) 
	{
		if(narsurv.status == 200) 
		{
			output = narsurv.responseText;
			document.getElementById('survey_narrow').innerHTML = output;
		}
	}
}
function callsearchAHAH() 
{
	try 
	{
		srch = new XMLHttpRequest(); /* e.g. Firefox */
	} 
	catch(e) 
	{
		try 
		{
			srch = new ActiveXObject("Msxml2.XMLHTTP");  /* some versions IE */
		} 
		catch (e) 
		{
			try 
			{
				srch = new ActiveXObject("Microsoft.XMLHTTP");  /* some versions IE */
			} 
			catch (E) 
			{
				srch = false;
			} 
		} 
	}
	myRand = parseInt(Math.random()*99999999);
	
		var query=document.getElementById("site_search").value;
		if(document.getElementById("site_search").value=="")
			document.getElementById('search_container').innerHTML = "";
		else
		{
			srch.onreadystatechange = function() {responsearchAHAH();};
			srch.open("GET",'http://markbladet.se/ahahsearchresult.php'+'?q='+query+'&rand='+myRand,true);
			srch.send(null);
		}

	return false;
}
function responsearchAHAH() 
{
	
	var output = '';
	if(srch.readyState == 4) 
	{
		if(srch.status == 200) 
		{
			output = srch.responseText;
			document.getElementById('search_container').innerHTML = output;
		}
	}
}
function hashpsw()
{
	document.loginform.psw_hash.value=hex_md5(document.loginform.psw.value);
	document.loginform.psw.value="";
}
function callBirthdayAHAH() 
{
	try 
	{
		brth = new XMLHttpRequest(); /* e.g. Firefox */
	} 
	catch(e) 
	{
		try 
		{
			brth = new ActiveXObject("Msxml2.XMLHTTP");  /* some versions IE */
		} 
		catch (e) 
		{
			try 
			{
				brth = new ActiveXObject("Microsoft.XMLHTTP");  /* some versions IE */
			} 
			catch (E) 
			{
				brth = false;
			} 
		} 
	}
	myRand = parseInt(Math.random()*99999999);
	
		var message="";
		brth.onreadystatechange = function() {responseBirthdayAHAH();};
		brth.open("GET",'http://markbladet.se/birthdayajax.php?rand='+myRand,true);
		brth.send(null);
	return false;
}
function responseBirthdayAHAH() 
{
	
	var output = '';
	if(brth.readyState == 4) 
	{
		if(brth.status == 200) 
		{
			output = brth.responseText;
			document.getElementById('birthday_container').innerHTML = output;
			$("a#single_birthdayimage").fancybox({'hideOnContentClick': true,'titlePosition': 'inside'});
		}
	}
}
function initAjax()
{
	callBirthdayAHAH();
	fadehandle = setInterval("fadeUpBirthday()",40);
}
function setOpacity(value) {
	document.getElementById("birthday_container").style.opacity = value/10;
	document.getElementById("birthday_container").style.filter = 'alpha(opacity=' + value + ')';
}

function fadeUpBirthday()
{
	opacity=opacity+4;
	if(opacity>100)
	{
		clearInterval(fadehandle);
		opacity=100;
		fadehandle = setTimeout("startFadeDown()",7000);
	}
	setOpacity(opacity);
}
function startFadeDown()
{
	clearInterval(fadehandle);
	fadehandle = setInterval("fadeDownBirthday()",40);
}

function fadeDownBirthday()
{
	opacity=opacity-4;
	if(opacity<0)
	{
		clearInterval(fadehandle);
		opacity=0;
		callBirthdayAHAH();
		fadehandle = setInterval("fadeUpBirthday()",40);
	}
	setOpacity(opacity);
}
/*-------------- MD5 ------------------*/

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */

/*
 * 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   */

/*
 * 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_md5(s)    { return rstr2hex(rstr_md5(str2rstr_utf8(s))); }
function b64_md5(s)    { return rstr2b64(rstr_md5(str2rstr_utf8(s))); }
function any_md5(s, e) { return rstr2any(rstr_md5(str2rstr_utf8(s)), e); }
function hex_hmac_md5(k, d)
  { return rstr2hex(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d))); }
function b64_hmac_md5(k, d)
  { return rstr2b64(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d))); }
function any_hmac_md5(k, d, e)
  { return rstr2any(rstr_hmac_md5(str2rstr_utf8(k), str2rstr_utf8(d)), e); }

/*
 * Perform a simple self-test to see if the VM is working
 */
function md5_vm_test()
{
  return hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72";
}

/*
 * Calculate the MD5 of a raw string
 */
function rstr_md5(s)
{
  return binl2rstr(binl_md5(rstr2binl(s), s.length * 8));
}

/*
 * Calculate the HMAC-MD5, of a key and some data (raw strings)
 */
function rstr_hmac_md5(key, data)
{
  var bkey = rstr2binl(key);
  if(bkey.length > 16) bkey = binl_md5(bkey, key.length * 8);

  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 = binl_md5(ipad.concat(rstr2binl(data)), 512 + data.length * 8);
  return binl2rstr(binl_md5(opad.concat(hash), 512 + 128));
}

/*
 * Convert a raw string to a hex string
 */
function rstr2hex(input)
{
  try { hexcase } catch(e) { hexcase=0; }
  var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
  var output = "";
  var x;
  for(var i = 0; i < input.length; i++)
  {
    x = input.charCodeAt(i);
    output += hex_tab.charAt((x >>> 4) & 0x0F)
           +  hex_tab.charAt( x        & 0x0F);
  }
  return output;
}

/*
 * Convert a raw string to a base-64 string
 */
function rstr2b64(input)
{
  try { b64pad } catch(e) { b64pad=''; }
  var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  var output = "";
  var len = input.length;
  for(var i = 0; i < len; i += 3)
  {
    var triplet = (input.charCodeAt(i) << 16)
                | (i + 1 < len ? input.charCodeAt(i+1) << 8 : 0)
                | (i + 2 < len ? input.charCodeAt(i+2)      : 0);
    for(var j = 0; j < 4; j++)
    {
      if(i * 8 + j * 6 > input.length * 8) output += b64pad;
      else output += tab.charAt((triplet >>> 6*(3-j)) & 0x3F);
    }
  }
  return output;
}

/*
 * Convert a raw string to an arbitrary string encoding
 */
function rstr2any(input, encoding)
{
  var divisor = encoding.length;
  var i, j, q, x, quotient;

  /* Convert to an array of 16-bit big-endian values, forming the dividend */
  var dividend = Array(Math.ceil(input.length / 2));
  for(i = 0; i < dividend.length; i++)
  {
    dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
  }

  /*
   * Repeatedly perform a long division. The binary array forms the dividend,
   * the length of the encoding is the divisor. Once computed, the quotient
   * forms the dividend for the next step. All remainders are stored for later
   * use.
   */
  var full_length = Math.ceil(input.length * 8 /
                                    (Math.log(encoding.length) / Math.log(2)));
  var remainders = Array(full_length);
  for(j = 0; j < full_length; j++)
  {
    quotient = Array();
    x = 0;
    for(i = 0; i < dividend.length; i++)
    {
      x = (x << 16) + dividend[i];
      q = Math.floor(x / divisor);
      x -= q * divisor;
      if(quotient.length > 0 || q > 0)
        quotient[quotient.length] = q;
    }
    remainders[j] = x;
    dividend = quotient;
  }

  /* Convert the remainders to the output string */
  var output = "";
  for(i = remainders.length - 1; i >= 0; i--)
    output += encoding.charAt(remainders[i]);

  return output;
}

/*
 * Encode a string as utf-8.
 * For efficiency, this assumes the input is valid utf-16.
 */
function str2rstr_utf8(input)
{
  var output = "";
  var i = -1;
  var x, y;

  while(++i < input.length)
  {
    /* Decode utf-16 surrogate pairs */
    x = input.charCodeAt(i);
    y = i + 1 < input.length ? input.charCodeAt(i + 1) : 0;
    if(0xD800 <= x && x <= 0xDBFF && 0xDC00 <= y && y <= 0xDFFF)
    {
      x = 0x10000 + ((x & 0x03FF) << 10) + (y & 0x03FF);
      i++;
    }

    /* Encode output as utf-8 */
    if(x <= 0x7F)
      output += String.fromCharCode(x);
    else if(x <= 0x7FF)
      output += String.fromCharCode(0xC0 | ((x >>> 6 ) & 0x1F),
                                    0x80 | ( x         & 0x3F));
    else if(x <= 0xFFFF)
      output += String.fromCharCode(0xE0 | ((x >>> 12) & 0x0F),
                                    0x80 | ((x >>> 6 ) & 0x3F),
                                    0x80 | ( x         & 0x3F));
    else if(x <= 0x1FFFFF)
      output += String.fromCharCode(0xF0 | ((x >>> 18) & 0x07),
                                    0x80 | ((x >>> 12) & 0x3F),
                                    0x80 | ((x >>> 6 ) & 0x3F),
                                    0x80 | ( x         & 0x3F));
  }
  return output;
}

/*
 * Encode a string as utf-16
 */
function str2rstr_utf16le(input)
{
  var output = "";
  for(var i = 0; i < input.length; i++)
    output += String.fromCharCode( input.charCodeAt(i)        & 0xFF,
                                  (input.charCodeAt(i) >>> 8) & 0xFF);
  return output;
}

function str2rstr_utf16be(input)
{
  var output = "";
  for(var i = 0; i < input.length; i++)
    output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF,
                                   input.charCodeAt(i)        & 0xFF);
  return output;
}

/*
 * Convert a raw string to an array of little-endian words
 * Characters >255 have their high-byte silently ignored.
 */
function rstr2binl(input)
{
  var output = Array(input.length >> 2);
  for(var i = 0; i < output.length; i++)
    output[i] = 0;
  for(var i = 0; i < input.length * 8; i += 8)
    output[i>>5] |= (input.charCodeAt(i / 8) & 0xFF) << (i%32);
  return output;
}

/*
 * Convert an array of little-endian words to a string
 */
function binl2rstr(input)
{
  var output = "";
  for(var i = 0; i < input.length * 32; i += 8)
    output += String.fromCharCode((input[i>>5] >>> (i % 32)) & 0xFF);
  return output;
}

/*
 * Calculate the MD5 of an array of little-endian words, and a bit length.
 */
function binl_md5(x, len)
{
  /* append padding */
  x[len >> 5] |= 0x80 << ((len) % 32);
  x[(((len + 64) >>> 9) << 4) + 14] = len;

  var a =  1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d =  271733878;

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

    a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
    d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
    c = md5_ff(c, d, a, b, x[i+ 2], 17,  606105819);
    b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
    a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
    d = md5_ff(d, a, b, c, x[i+ 5], 12,  1200080426);
    c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
    b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
    a = md5_ff(a, b, c, d, x[i+ 8], 7 ,  1770035416);
    d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
    c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
    b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
    a = md5_ff(a, b, c, d, x[i+12], 7 ,  1804603682);
    d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
    c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
    b = md5_ff(b, c, d, a, x[i+15], 22,  1236535329);

    a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
    d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
    c = md5_gg(c, d, a, b, x[i+11], 14,  643717713);
    b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
    a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
    d = md5_gg(d, a, b, c, x[i+10], 9 ,  38016083);
    c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
    b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
    a = md5_gg(a, b, c, d, x[i+ 9], 5 ,  568446438);
    d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
    c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
    b = md5_gg(b, c, d, a, x[i+ 8], 20,  1163531501);
    a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
    d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
    c = md5_gg(c, d, a, b, x[i+ 7], 14,  1735328473);
    b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);

    a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
    d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
    c = md5_hh(c, d, a, b, x[i+11], 16,  1839030562);
    b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
    a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
    d = md5_hh(d, a, b, c, x[i+ 4], 11,  1272893353);
    c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
    b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
    a = md5_hh(a, b, c, d, x[i+13], 4 ,  681279174);
    d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
    c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
    b = md5_hh(b, c, d, a, x[i+ 6], 23,  76029189);
    a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
    d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
    c = md5_hh(c, d, a, b, x[i+15], 16,  530742520);
    b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);

    a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
    d = md5_ii(d, a, b, c, x[i+ 7], 10,  1126891415);
    c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
    b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
    a = md5_ii(a, b, c, d, x[i+12], 6 ,  1700485571);
    d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
    c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
    b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
    a = md5_ii(a, b, c, d, x[i+ 8], 6 ,  1873313359);
    d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
    c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
    b = md5_ii(b, c, d, a, x[i+13], 21,  1309151649);
    a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
    d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
    c = md5_ii(c, d, a, b, x[i+ 2], 15,  718787259);
    b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);

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

/*
 * These functions implement the four basic operations the algorithm uses.
 */
function md5_cmn(q, a, b, x, s, t)
{
  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t)
{
  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t)
{
  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t)
{
  return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t)
{
  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}

/*
 * 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 bit_rol(num, cnt)
{
  return (num << cnt) | (num >>> (32 - cnt));
}