View source for MyWiki:WikiProject User scripts/Scripts/livepreview.js

// Last update: 10 Sep 2005
// by Lupin (some demunging and commenting) based on Pilaf's version of
// 21:51, 15 Feb 2005 (UTC)

// Script to embed Live Preview in MediaWiki's edit page
function LivePreviewInstall()
{
 copywarn = document.getElementById('editpage-copywarn');
 if (copywarn != null) {
  var cleaner = "<br style=\\'clear:both;\\' />";
  LivePreviewHTML = '<input type="button" value="Live Preview"' 
    + ' onclick="document.getElementById(\'PreviewBox\').innerHTML = wiki2html(editform.wpTextbox1.value) + \'' 
    + cleaner + '\';" />';
  LivePreviewHTML += '<div style="margin-top: 5px; margin-bottom: 5px;'+
    ' padding: 5px; border: 3px double orange;" id="PreviewBox"></div>';
  copywarn.innerHTML = LivePreviewHTML + copywarn.innerHTML;
 }
}

// User options
var wpUserName=wpUserName||'Wikipedian';
var wpUserSignature=wpUserSignature||wpUserName;
var wpShowImages=wpShowImages||true;

// System options
var wpLanguageCode=wpLanguageCode||'en';
var wpInterwikiCodes=wpInterwikiCodes||'ab|aa|af|ak|sq|als|am|ang|ar|an|arc|hy|roa-rup|as|ast|av|ay|az|bm|ba|eu|be|bn|bh|bi|bs|br|bg|my|ca|ch|ce|chr|chy|ny|zh|zh-tw|zh-cn|cho|cv|kw|co|cr|hr|cs|da|dv|nl|dz|en|eo|et|ee|fo|fj|fi|fr|fy|ff|gl|ka|de|got|el|kl|gn|gu|ht|ha|haw|he|hz|hi|ho|hu|is|io|ig|id|ia|ie|iu|ik|ga|it|ja|jv|kn|kr|csb|ks|kk|km|ki|rw|rn|tlh|kv|kg|ko|kj|ku|ky|lo|la|lv|li|ln|lt|jbo|nds|lg|lb|mk|mg|ms|ml|mt|gv|mi|minnan|mr|mh|zh-min-nan|mo|mn|mus|nah|na|nv|ne|se|no|nn|oc|or|om|pi|fa|pl|pt|pa|ps|qu|ro|rm|ru|sm|sg|sa|sc|gd|sr|sh|st|tn|sn|scn|simple|sd|si|sk|sl|so|st|es|su|sw|ss|sv|tl|ty|tg|ta|tt|te|th|bo|ti|tpi|to|tokipona|ts|tum|tr|tk|tw|uk|ur|ug|uz|ve|vi|vo|wa|cy|wo|xh|ii|yi|yo|za|zu';
var wpBaseArticlePath=wpBaseArticlePath||'/wiki/';
var wpMathBasePath=wpMathBasePath||'/math/';
var wpImageBasePath=wpImageBasePath||'http://upload.wikimedia.org/wikipedia/'+wpLanguageCode+'/';
var wpImageFallbackPath=wpImageFallbackPath||'http://upload.wikimedia.org/wikipedia/commons/';
var wpDefaultThumbWidth=wpDefaultThumbWidth||180;
var wpSkinMagnifyClip=wpSkinMagnifyClip||'/skins/common/images/magnify-clip.png';
var wpUserNamespace=wpUserNamespace||'User';
var wpImageNamespace=wpImageNamespace||'Image';
var wpCategoryNamespace=wpCategoryNamespace||'Category';

// Somewhat unpacked code 
function wiki2html(str) {
  str=strip_cr(str);
  var w=new WikiCode();
  w.lines=str.split(/\n/);
  w.parse();
  return w.html;
};

// [[User:Wikipedian|Wikipedian]]
var wpSignature='[['+wpUserNamespace+':'+wpUserName+'|'+wpUserSignature+']]';

// [[Image:summat|frame (must include a pipe)
var wpBlockImage=new RegExp('^\\[\\['+wpImageNamespace+
                            ':.*?\\|.*?(?:frame|thumbnail|thumb|none|right|left|center)',
                            'i');
function WikiCode() {
  this.lines=new Array;
  this.html=new String;

  this._endline=function(str) {
    this.html+=str;
    this.lines.shift();
  };

  this.parse=function() {
    var p=false;
    do {
      if (h_match=this.lines[0].match(/^(={1,6})(.*)\1(.*)$/)) {
        // heading: === foo === bar
        // BUG: bar passes through without being dewikified
        // eg === foo === ''bar''
        p=false;
        this._endline('<h'+h_match[1].length+'>'+_parse_inline_nowiki(h_match[2])+
                      '</h'+h_match[1].length+'>'+h_match[3]);
      } else if (this.lines[0].match(/^[*#:;]/)) {
        // list element
        p=false;
        this._parse_list();
      } else if (this.lines[0].charAt(0)==' ') {
        // pre (indicated by leading whitespace)
        p=false;
        this._parse_pre();
      } else if (this.lines[0].substr(0,2)=='{|') {
        // start of wikitable
        p=false;
        this._parse_table();
      } else if (this.lines[0].match(/^----+$/)) {
        //  hr
        p=false;
        this._endline('<hr/>');
      } else if (this.lines[0].match(wpBlockImage)) {
        // block image
        p=false;
        this._parse_block_image();
      } else { /* fallthrough */
        if (this.lines[0]=='') {
          // blank line
          if ( p=(this.lines.length>1 && this.lines[1]=='') ) {
            // two blank lines, not at the end
            this._endline('<p><br />');}
        } else {
          if (!p) {
            this.html+='<p>';
            p=true;
          }
          this.html+=_parse_inline_nowiki(this.lines[0])+' ';
        }
        this.lines.shift();
      } /* end fallthrough */
    } while (this.lines.length);
  }; /* end this.parse */

  this._parse_list=function() {
    // called when first line matches /^[*#:;]/
    var prev=new String;
    var l_match,imatch,dt_match;
    while (this.lines.length && (l_match=this.lines[0].match(/^([*#:;]+)(.*)$/))) {
      this.lines.shift();
      imatch=str_imatch(prev,l_match[1]);
      for(var i=prev.length-1;i>=imatch;i--) {
        if (prev.charAt(i)=='*') {
          this.html+='</ul>';
        } else if (prev.charAt(i)=='#') {
          this.html+='</ol>';
        } else {
          this.html+='</d'+((prev.charAt(i)==';')?'t':'d')+'>';
          switch(l_match[1].charAt(i)) {
            case'':case'*':case'#':
              this.html+='</dl>';
          }
        }
      }
      for(var i=imatch;i<l_match[1].length;i++) {
        if (l_match[1].charAt(i)=='*') {
          this.html+='<ul>';
        } else if (l_match[1].charAt(i)=='#') {
          this.html+='<ol>';
        } else {
          switch(prev.charAt(i)) {
            case'':case'*':case'#':
              this.html+='<dl>';
          }
          this.html+='<d'+((l_match[1].charAt(i)==';')?'t':'d')+'>';
        }
      }
      switch(l_match[1].charAt(l_match[1].length-1)) {
        case'*':case'#':
          this.html+='<li>'+_parse_inline_nowiki(l_match[2]);
        break;
        case';':
          if (dt_match=l_match[2].match(/(.*?) (:.*?)$/)) {
            this.html+=_parse_inline_nowiki(dt_match[1]);
            this.lines.unshift(dt_match[2]);
            break;
          }
        case':':
          this.html+=_parse_inline_nowiki(l_match[2]);
      }
      prev=l_match[1];
    } /* while */
    for(i=prev.length-1;i>=0;i--) {
      if (prev.charAt(i)=='*') {
        this.html+='</ul>';
      } else if (prev.charAt(i)=='#') {
        this.html+='</ol>';
      } else { 
        this.html+='</d'+((prev.charAt(i)==';')?'t':'d')+'></dl>';
      }
    }
  }; /* end this._parse_list */
  
  this._parse_table=function() {
    var table_match;
    if (table_match=this.lines[0].match(/^\{\|( .*)$/)) {
      this._endline('<table'+table_match[1]+'>');
    } else this._endline('<table>');
    do { 
      if (this.lines[0].charAt(0)=='|') {
        switch(this.lines[0].charAt(1)) {
          case'}':
            this._endline('</table>');
          return;
          case'-':
            this._endline('<tr '+this.lines[0].match(/\|-*(.*)/)[1]+'>');
          break;
        default:
          this._parse_table_data();
        }
      } else if (this.lines[0].charAt(0)=='!') {
        this._parse_table_data();
      } else { 
        this.lines.shift();
      }
    } while (this.lines.length) 
  }; /* end this._parse_table */

  this._parse_table_data=function() {
    var td_match,td_line;
    // the next line really confuses emacs c-mode indentation
    td_match=this.lines.shift().match(/^(\|\+|\||!)((?:([^[|]*?)\|(?!\|))?(.*))$/);
    if (td_match[1]=='|+') {
      this.html+='<caption';
    } else { 
      this.html+='<t'+((td_match[1]=='|')?'d':'h'); 
    }
    if (typeof td_match[3]!='undefined') {
      this.html+=' '+td_match[3];
      td_line=td_match[4].split('||');
    } else {
      td_line=td_match[2].split('||');
    }
    this.html+='>';while(td_line.length>1) {
      this.lines.unshift(td_match[1]+td_line.pop());
    }
    this.html+=_parse_inline_nowiki(td_line[0]);
    var td=new WikiCode;
    var table_count=0;
    while(this.lines.length) {
      if (this.lines[0].charAt(0)=='|') {
        if (table_count==0) break;
        else if (this.lines[0].charAt(1)=='}') table_count--;
      } else if (this.lines[0].charAt(0)=='!'&&table_count==0) { break; } 
      else if (this.lines[0].substr(0,2)=='{|')
        table_count++;td.lines.push(this.lines.shift());
    }
    if (td.lines.length) {
      td.parse();
    }
    this.html+=td.html;
  }; /* end this._parse_table_data */ 

  this._parse_pre=function() {
    this.html+='<pre>';
    do {
      this._endline(_parse_inline_nowiki(this.lines[0]
                                         .substring(1,this.lines[0].length))+"\n");
    } while(this.lines.length&&this.lines[0].charAt(0)==' ');
    this.html+='</pre>';
  };
    
  this._parse_block_image=function() {
    this.html+=_parse_image(this.lines.shift());
  };

}; /* end WikiCode constructor */

function _parse_image(str) {
  var attr=str.substring(wpImageNamespace.length+3,str.length-2).split(/\s*\|\s*/);
  var filename=attr[0];
  var caption=attr[attr.length-1];
  var width,w_match;
  var thumb=false;
  var frame=false;
  var center=false;
  var align='';
  var html='';
  do {
    if (w_match=attr[0].match(/^(\d*)px$/)) {
      width=w_match[1];
    } else switch(attr[0]) {
      case'thumb':case'thumbnail':
        thumb=true;
      case'frame':
        frame=true;
      break;
      case'none':case'right':case'left':
        center=false;
      align=attr[0];
      break;
      case'center':
        center=true;
      align='none';
    }
    attr.shift();
  } while (attr.length);
  if (frame) {
    if (align=='') align='right';
    html+="<div class='thumb t"+align+"'>";
    if (thumb) {
      if (!width) width=wpDefaultThumbWidth;
      html+="<div style='width:" + (2+parseInt(width)) + "px;'>";
      html+=_make_image(filename,caption,width);
      html+="<div class='thumbcaption'>"  
        + "<div class='magnify' style='float:right'><a href='"
        + wpBaseArticlePath+wpImageNamespace+':'+filename
        + "' class='internal' title='Enlarge'><img src='"
        + wpSkinMagnifyClip+"' /></a></div>"+_parse_inline_nowiki(caption)
        + "</div>";
    } else {
      html+='<div>';
      html+=_make_image(filename,caption);
      html+="<div class='thumbcaption'>"+_parse_inline_nowiki(caption)+"</div>";
    }
    html+='</div></div>';
  } else if (align!='') {
    html+="<div class='float"+align+"'><span>"
      +_make_image(filename,caption,width)
      +"</span></div>";
  } else {
    return _make_image(filename,caption,width);
  }
  if (center) {
    return"<div class='center'>"+html+'</div>';
  } else {return html;}
};

this._parse_inline_nowiki=function(str) {
  var start,lastend=0;
  var substart=0,nestlev=0,open,close,subloop;
  var html='';
  while (-1!=(start=str.indexOf('<'+'nowiki>',substart))) {
    html+=_parse_inline_wiki(str.substring(lastend,start));
    start+=8;
    substart=start;
    subloop=true;
    do { 
      open=str.indexOf('<'+'nowiki>',substart);
      close=str.indexOf('</nowiki>',substart);
      if (close<=open||open==-1) {
        if (close==-1) {
          return html+html_entities(str.substr(start));
        }
        substart=close+9;
        if (nestlev) {
          nestlev--;
        } else { 
          lastend=substart;
          html+=html_entities(str.substring(start,lastend-9));subloop=false;
        }
      } else {
        substart=open+8;
        nestlev++;
      }
    } while(subloop);
  }
  return html+_parse_inline_wiki(str.substr(lastend));
};

function _make_image(filename,caption,width) {
  filename=filename.charAt(0).toUpperCase()+filename.substr(1);
  filename=filename.replace(/ /g,'_');
  var md5=hex_md5(filename);
  var source=md5.charAt(0)+'/'+md5.substr(0,2)+'/'+filename;
  var img;
  if (wpShowImages) {
    if (width) {
      width="width='"+width+"px'";
    }
    img="<img onerror='this.onerror=null;this.src=\""
      +wpImageFallbackPath+source+"\";' src='"
      +wpImageBasePath+source+"' alt='"+caption+"' "+width+"/>";
  } else {
    img=wpImageNamespace+':'+filename
      +" <em style='color:red;'>(images disabled)</em>";
  }
  caption=_strip_inline_wiki(caption);
  return "<a class='image' title='"+caption+"' href='"
    +wpBaseArticlePath+wpImageNamespace+':'
    +filename+"'>"+img+"</a>";
};

function _parse_inline_images(str) {
  var start,substart=0,nestlev=0;
  var loop,close,open,wiki,html;
  while(-1!=(start=str.indexOf('[[',substart))) {
    if (str.substr(start+2).match(RegExp('^'+wpImageNamespace+':','i'))) {
      loop=true;substart=start;
      do { 
        substart+=2;close=str.indexOf(']]',substart);
        open=str.indexOf('[[',substart);
        if (close<=open||open==-1) {
          if (close==-1) return str;
          substart=close;
          if (nestlev) {
            nestlev--;
          } else {
            wiki=str.substring(start,close+2);
            html=_parse_image(wiki);
            str=str.replace(wiki,html);substart=start+html.length;loop=false;
          }
        } else {
          substart=open;nestlev++;
        }
      } while(loop);
    } else {
      break;
    }
  } /* end while loop */
  return str;
};

function _parse_inline_wiki(str) {
  var aux_match,math_md5;
  str=_parse_inline_images(str);
  while(aux_match=str.match(/<(?:)math>(.*?)<\/math>/i)) {
    math_md5=hex_md5(aux_match[1]);
    str=str.replace(aux_match[0],"<img src='"+wpMathBasePath+math_md5+'.png'+"' />");
  }
  return str
    .replace(/'''''(.*?)''(.*?)'''/g,'<strong><em>$1</em>$2</strong>')
    .replace(/'''''(.*?)'''(.*?)''/g,'<em><strong>$1</strong>$2</em>')
    .replace(/'''(.*?)''(.*?)'''''/g,'<strong>$1<em>$2</em></strong>')
    .replace(/'''(.*?)'''/g,'<strong>$1</strong>')
    .replace(/''(.*?)''/g,'<em>$1</em>')
    .replace(/~{5}(?!~)/g,Date())
    .replace(/~{4}(?!~)/g,wpSignature+' '+Date())
    .replace(/~{3}(?!~)/g,wpSignature)
    .replace(RegExp('\\[\\[:((?:'+wpCategoryNamespace
                    +'|'+wpInterwikiCodes+'):.*?)\\]\\]','gi'),
             "<a href='"+wpBaseArticlePath+"$1'>$1</a>")
    .replace(RegExp('\\[\\[(?:'+wpCategoryNamespace
                    +'|'+wpInterwikiCodes+'):.*?\\]\\]','gi')
             ,'')
    .replace(/\[\[([^|]*?)\]\](\w*)/g,"<a href='"+wpBaseArticlePath+"$1'>$1$2</a>")
    .replace(/\[\[(.*?)\|([^\]]+?)\]\](\w*)/g,
             "<a href='"+wpBaseArticlePath+"$1'>$2$3</a>")
    .replace(/\[\[([^\]]*?:)?(.*?)( *\(.*?\))?\|\]\]/g,
             "<a href='"+wpBaseArticlePath+"$1$2$3'>$2</a>")
    .replace(/\[(http|news|ftp|mailto|gopher|irc):(\/*)([^\]]*?) (.*?)\]/g,
             "<a href='$1:$2$3'>$4</a>")
    .replace(/\[http:\/\/(.*?)\]/g,"<a href='http://$1'>[#]</a>")
    .replace(/\[(news|ftp|mailto|gopher|irc):(\/*)(.*?)\]/g,
             "<a href='$1:$2$3'>$1:$2$3</a>")
    .replace(/(^| )(http|news|ftp|mailto|gopher|irc):(\/*)([^ $]*)/g,
             "$1<a href='$2:$3$4'>$2:$3$4</a>")
    .replace('__NOTOC__','')
    .replace('__NOEDITSECTION__','');
};
 
function _strip_inline_wiki(str) {
  return str.replace(/\[\[[^\]]*\|(.*?)\]\]/g,'$1')
    .replace(/\[\[(.*?)\]\]/g,'$1')
    .replace(/''(.*?)''/g,'$1');
};

function max(a,b) {
  if (a>b)return a;
  else return b;
};
 
function min(a,b) {
  if (a<b)return a;
  else return b;
};

function str_imatch(str_a,str_b) {
  var lim=min(str_a.length,str_b.length);
  for(var i=0;i<lim;i++) {
    if (str_a.charAt(i)!=str_b.charAt(i))
      return i;
  }
  return i;
};

function strip_cr(str) {
  return str.replace(/\n\r/g,"\n").replace(/\r/g,'');
};

function html_entities(str) {
  return str.replace(/&/g,"&amp;")
    .replace(/</g,"&lt;")
    .replace(/>/g,"&gt;");
};
 

/* start md5 nonsense */
 var chrsz=8;var hex_tab="0123456789abcdef";function hex_md5(s) {
return binl2hex(core_md5(str2binl(s),s.length*chrsz));};function core_md5(x,len)
{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);};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);};function safe_add(x,y){var lsw=(x&0xFFFF)+(y&0xFFFF);var msw=(x>>16)+(y>>16)+(lsw>>16);return(msw<<16)|(lsw&0xFFFF);};function bit_rol(num,cnt){return(num<<cnt)|(num>>>(32-cnt));};function str2binl(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)<<(i%32);return bin;};function binl2hex(binarray){var str='';for(var i=0;i<binarray.length*4;i++){str+=hex_tab.charAt((binarray[i>>2]>>((i%4)*8+4))&0xF)+hex_tab.charAt((binarray[i>>2]>>((i%4)*8))&0xF);}return str;}; 
  /* end md5 nonsense */