Ajax for loading documents from local and crossdomain

ajax_get.js

var ajax_get = function(p) {
    var cors = false;
    if (p.url.split("//").length == 1) {
        var url = p.url + "?" + this.timeStamp();
    } else {
        cors = true;
        var url = 'http://query.yahooapis.com/v1/public/yql?q=' + encodeURIComponent('select * from html WHERE url="' + p.url + '" AND xpath="//body"') + '&format=xml&callback=cb';
    }
    return new Promise(function(resolve, reject) {
        var xhttp = new XMLHttpRequest();
        xhttp.onload = function() {
            if (this.status == 200) {
                function cb(d) {
                    return d;
                }
                if (cors) {
                    var pom = document.createElement("template");
                    pom.innerHTML = eval(this.responseText).results[0];
                    for (var i = 0; i < pom.content.childNodes.length; i++) {
                        if (pom.content.childNodes[i].tagName != undefined) {
                            var dom = pom.content.childNodes[i].querySelectorAll("[src]");
                            for (var x = 0; x < dom.length; x++) {
                                if (dom[x].getAttribute("src").split("//").length == 1) {
                                    dom[x].src = p.url + "/" + dom[x].getAttribute("src");
                                }
                            };
                            var dom = pom.content.childNodes[i].querySelectorAll("[href]");
                            for (var x = 0; x < dom.length; x++) {
                                if (dom[x].getAttribute("href").split("//").length == 1) {
                                    dom[x].href = p.url + "/" + dom[x].getAttribute("href");
                                }
                            }
                        }
                    };
                    resolve(pom.innerHTML);
                } else {
                    resolve(this.responseText);
                }
            } else {
                reject(Error(this.statusText));
            }
        };
        xhttp.onerror = function() {
            reject(Error("Network Error"));
        };
        xhttp.open("GET", url, true);
        xhttp.send();
    }).then(function(response) {
        p.callBack(response);
    }, function(error) {
        console.error("Fail! But u promise :(");
    });
};