Java脚本代码不适用于Mozila Firefox但在其他浏览器中工作

Question

我正在尝试使用madserve广告，但此脚本无法在Firefox上运行，但适用于其他浏览器。

如果有任何方法可以在firefox上运行，请提供帮助。

请帮助我不了解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);