// Adds a function to the window.onload event list
function addLoadEvent(func) {
        var oldonload = window.onload;
        if (typeof window.onload != 'function') {
                window.onload = func;
        }
        else {
                window.onload = function() {
                        if (oldonload) {
                                oldonload();
                        }
                        func();
                }
        }
}