global props diff

globalPropsDiff

(function(global) {

var getGlobalProps = function() {
        var prop, globalProps = {};
        for (prop in global) {
            globalProps[prop] = true;
        }
        return globalProps;
    },
    getGlobalPropsDiff = function(globalProps) {
        var prop, propsDiff = {};
        for (prop in global) {
            if (true !== globalProps[prop]) {
                propsDiff[prop] = true;
            }
        }
        return propsDiff;
    },
    remapGlobalProps = function(src, propsBeforeLoad) {
        var propsDiff = getGlobalPropsDiff(propsBeforeLoad),
            prop;
        
        if (!global.container[src]) {
            global.container[src] = {};
            
            for (prop in propsDiff) {
                global.container[src][prop] = global[prop];
                delete global[prop];
            }
        }

    },
    loadScript = function(src, onLoad) {
        var propsBeforeLoad = getGlobalProps(),
            script = document.createElement('script');
    
        script.type = "text/javascript";
        script.src  = src;
        
        script.onload = function() {
            remapGlobalProps(src, propsBeforeLoad);
            onLoad(global.container[src]);
        }

        document.head.appendChild(script);
    },
    logVersion = function(container) {
        if (container.jQuery) {
            console.log(container.$.fn.jquery);
        }
    };


global.container = {};

loadScript("http://code.jquery.com/jquery-1.7.2.min.js", logVersion);
loadScript("http://code.jquery.com/jquery-1.6.4.min.js", logVersion);

})(this);