this.blankwin = function() {
    var a = document.getElementsByTagName("a");
    for (var i = 0; i < a.length; i++) {
        a[i].target = "_top";
    };
};


this.addEvent = function(obj, type, fn) {
    if (obj.attachEvent) {
        obj['e' + type + fn] = fn;
        obj[type + fn] = function() { obj['e' + type + fn](window.event); }
        obj.attachEvent('on' + type, obj[type + fn]);
    } else {
        obj.addEventListener(type, fn, false);
    };
};

addEvent(window, "load", blankwin);