document.getElementsByClassName = function (needle) {
	var my_array = document.getElementsByTagName("*");
	var retvalue = new Array();
	var i;
	var j;
	for (i = 0, j = 0; i < my_array.length; i++) {
		var c = " " + my_array[i].className + " ";
		if (c.indexOf(" " + needle + " ") != -1) {
			retvalue[j++] = my_array[i];
		}
	}
	return retvalue;
};
function addEvent(obj, evType, fn) {
	if (obj.addEventListener) {
		obj.addEventListener(evType, fn, true);
		return true;
	} else {
		if (obj.attachEvent) {
			var r = obj.attachEvent("on" + evType, fn);
			return r;
		} else {
			return false;
		}
	}
}