javascript - Java Script Code Is Not Working On Mozila Firefox But Works in Other Browser -

i trying madserve ads script not working on firefox works on other browsers.

please if there method work on firefox.

help please don't know javascript....

 (function(window) { document._write = document.write; undefined = "undefined"; var isie = false; if (navigator.appname == "microsoft internet explorer") {     isie = true;     var onload = function(func,unique) {         document._write('<script type="text/javascript" '                       + 'id="loading_ie_fallback'                      + unique                      + '" defer="defer" '                      + 'src="javascript:void(0)">'                      + '<\/script>');          var cload = document.getelementbyid("loading_ie_fallback"+unique);         cload.onreadystatechange = function() {             if( this.readystate=="complete" ) {                 func();             }         };     }; } var registr = {     scriptcont:/<script.*?\/script>/gi,     jsurl:/src\s*=\s*[\'\"]\s*http[s]*:\/\/.*\.js/gi,     scripttags:/<[\/]*script[^>]*>/gi }; var workmedcont = function workmedcont(medcont,target) {     medcont = medcont.replace(/[\r\n\t]/g,"");     var scripts = medcont.match(registr.scriptcont,"") || [],         nodes = [];     medcont = medcont.replace(/&#rn;/g,"\r\n");     medcont = medcont.replace(/&#n;/g,"\n");     medcont = medcont.replace(registr.scriptcont,"");         for( iter=0;iter<scripts.length;iter++ ) {          var script = scripts[iter],             opentag = script.match(/^<[^>]+/)[0],             attributes = opentag.match(/[a-za-z]+\s*=\s*[\'\"][^\'\"]+/gi),             pass = {};         script = script.replace(/<\!--.*?\*\//,"");         script = script.replace(/\/\*.*?\/-->/,"");         if( attributes ) {             var set = [];             for( _iter=0;_iter<attributes.length;_iter++ ) {                 var set = attributes[_iter].replace(/[\'\"\s]/g,'')                                           .split("=");                 var attr_name = set.shift();                 var attr_val = set.join("=");                 pass[attr_name] = attr_val;             }         }         nodes[nodes.length] = [document.createelement("script"),false];          for( var attr in pass ) {             nodes[nodes.length-1][0][attr] = pass[attr];         }          if( !pass["src"] ) {             script = script.replace(registr.scripttags,"");             nodes[nodes.length] = [script,true];         }     }     target.innerhtml = target.innerhtml + medcont;      document.write = function(append) {          workmedcont(append,target);     }      for( iter=0;iter<nodes.length;iter++ ) {         if( nodes[iter][1] ) {             try {                 window.eval(nodes[iter][0]);             }              catch(e) {}         } else {             target.appendchild(nodes[iter][0]);         }     } }  var create = function() {      var adcount = 0;      return function(madservevariables) {          adcount++;         var id = 'global_ad_id' + adcount;          if( !madservevariables.s ) return;          var src = madservevariables.requesturl;         if( typeof madservevariables.service != "undefined" ) {             src = madservevariables.service;         }          var cgi = ['p=' + escape(document.location),                    'random=' + math.random(),                    'rt=javascript',                    'v=js_10',                    'jsvar=' + id,                    'u=' + navigator.useragent];          for( var setting in madservevariables ) {             var cgivar = setting + '=' + escape(madservevariables[setting]);             cgi[cgi.length] = cgivar;         }         src += "?" + cgi.join('&');          document._write("<div id='" + id + "'></div>");         var container = document.getelementbyid(id),             varscall = document.createelement("script");          if( madservevariables.backfillhtml ) {             container.innerhtml = "<div id= 'm_dcontent"                                  + id + "' "                                 + "style='display:none'>"                                 + madservevariables.backfillhtml                                 + "</div>";         }          varscall.type = "text/javascript";         var varsloaded = function() {               if( isie ) {                 container = document.getelementbyid(id);             }              var ads = window[id];              for( iter=0;iter<ads.length;++iter ) {                  var ad = ads[iter];                 if( !madservevariables.target ) {                     madservevariables.target = '';                 }                  if( ad.error ) {                     if( madservevariables.backfillhtml && madservevariables.reveal ) {                         container.innerhtml = ad.error;                     }                     continue;                   }                  if( ad.img ) {                     var width = (madservevariables.img_width ? madservevariables.img_width: ''),                         height = (madservevariables.img_height ? madservevariables.img_height: ''),                         tag = "<a href='"                              + ad.url                              + "' target='" + madservevariables.target + "'>"                             + "<img src='" + ad.img + "'";                       if( madservevariables.img_width ) {                         tag += " width='" + width + "'";                     }                              if( madservevariables.img_height ) {                         tag += " height='" + height + "'";                     }                               tag += "/></a>";                       container.innerhtml = tag;                 } else if( ad.content ) {                     container.innerhtml = '';                     workmedcont(ad.content,container);                 } else {                     var tag = "<a href='" + ad.url + "' "                             + "target='" + madservevariables.target + "'>"                             + ad.text                             + "</a>";                      container.innerhtml = tag;                 }                  var track = new image();                 track.src = ad.track;             }              if( dcont = document.getelementbyid("m_dcontent" + id) ) {                 dcont.style.display = "block";             }              if( madservevariables.prependclickcontent ) {                 var links = container.getelementsbytagname("a");                 for( iter=0;iter<links.length;++iter ) {                     var link = links[iter],                         original = link.href;                     link.href = madservevariables.prependclickcontent + original;                 }             }              if( madservevariables.trackingpixelurl ) {                 var cachebust = math.random(),                     join = (madservevariables.trackingpixelurl.indexof('?') ? '&' : '?'),                     img = new image();                  img.src = madservevariables.trackingpixelurl + join + cachebust;              }             if( !isie ) delete this;         };          if( !isie ) {             varscall.onload = varsloaded;         } else {             varscall.onreadystatechange = function() {                 if( this.readystate != 'complete'                  && this.readystate != 'loaded') return;                  varsloaded();                 this.onreadystatechange = null;             }         }         varscall.src = src;         if( !isie ) {             window.addeventlistener(                 "domcontentloaded",                 function() {                     container.appendchild(varscall);                 },                 true             );         } else {             onload(function() {                   document.getelementbyid(id).appendchild(varscall);              },id);         }         if( !isie ) delete this;     }; }; if( !window.requestad_ ) {     window.requestad_ = create();  } })(window);