function getObj(id) {
    return (document.all)? document.all[id] : document.getElementById(id);
}

function addEvent(obj, event, fn) { // morzilaa
    if(obj.addEventListener) { 
        obj.addEventListener(event, fn, false);
        return true;
    } else if (obj.attachEvent) {	// ie
        return obj.attachEvent("on" + event, fn);
    } else { 
        obj["on"+event] = fn;
    }
}

function removeEvent(obj, event) {
    if(obj.removeEventListener) {
        obj.removeEventListener(event, function() {}, false);
        return true;
    } else if (obj.detachEvent) {
        return obj.detachEvent("on" + event, function() {});
    } else { 
        obj["on"+event] = function() {};
    }
}

function popwin( url, name, w, h ) {
    var left = (screen.width - w) / 2;
    var top = (screen.height - h) /2 ; 
    var prop = "dependent=yes, width="+w+", height="+h+", left="+left+", top="+top+", resizable=yes, scrollbars=yes, menubar=no, statusbar=no, toolbar=no, location=no";
    eval("var "+name+" = window.open(url, name, prop)");
    name.focus();
}