var OS = Class.create();
	OS.PageLoading = true;
	OS.PageLoadComplete = function() {
		OS.PageLoading = false;
		$A(OS.BehaviourQueue).each(function(selectors) {
			OS.ApplyBehaviour(selectors);
		});
		OS.BehaviourQueue = [];
	};
	Event.observe(document, 'dom:loaded', function() {
		OS.PageLoadComplete();
	});
	OS.BehaviourQueue = [];
	OS.RegisterBehaviour = function(selectors) {
		if(!OS.PageLoading) { OS.ApplyBehaviour(selectors); return; }
		OS.BehaviourQueue.push(selectors);    
	}
	OS.ApplyBehaviour = function(selectors) {
		$H(selectors).each(function(item) {
			var sKey = item.key;
			var iDelay = 0;
			var iToken = sKey.indexOf("!D");
			if (iToken > 0) {
				iDelay = parseFloat(sKey.substring(iToken + 2)) || 0;
				sKey = sKey.substring(0, iToken);
				iDelay = parseInt(iDelay);
			}
			$$(sKey).each(function(element) {
				if (!iDelay) { item.value(element); return; }
				item.value.delay(iDelay, element);
			});
		});
	};