var addEvent;
if (document.addEventListener) {
    addEvent = function(element, type, handler) {
        element.addEventListener(type, handler, null);
    };
} else if (document.attachEvent) {
    addEvent = function(element, type, handler) {
        element.attachEvent("on" + type, handler);
    };
} else {
    addEvent = new Function; // not supported
}

addEvent(window, "load", initNSV);
function initNSV() {
	if ($('number')) {
		updateCounter();
	}
}

function updateCounter() {
	var x = Math.random();
	new Ajax.PeriodicalUpdater('ajax_counter', 'update_tmobil.php?rand='+x, {method: 'get', frequency: 5, decay: 0});

}