add minified calendar with utils

calendar.js

@@ -277,8 +277,7 @@ var Calendar = {
 	},
 
 	/// Setup a text input box to be a calendar box.
-	set: function(input_or_id)
+	set: function(input_or_id) {
-	{
 		if (typeof input_or_id == 'string')
 			input_or_id = document.getElementById(input_or_id);
 		if (!input_or_id)

calendar.util.js

@@ -0,0 +1,47 @@
+(function() {
+
+// UTILITY FUNCTIONS
+window.addListener = (function() {
+	return window.addEventListener
+		? function(el, type, fn) { el.addEventListener(type, fn, false); }
+		: function(el, type, fn) { el.attachEvent('on'+type, fn); };
+})();
+
+var getOffsetRect = function(elem)
+{
+	var box = elem.getBoundingClientRect();
+
+	var body = document.body;
+	var docElem = document.documentElement;
+
+	var scrollTop = window.pageYOffset || docElem.scrollTop || body.scrollTop;
+	var scrollLeft = window.pageXOffset || docElem.scrollLeft || body.scrollLeft;
+	var clientTop = docElem.clientTop || body.clientTop || 0;
+	var clientLeft = docElem.clientLeft || body.clientLeft || 0;
+	var top = box.top + scrollTop - clientTop;
+	var left = box.left + scrollLeft - clientLeft;
+
+	return { top: Math.round(top), left: Math.round(left) };
+};
+
+var getOffsetSum = function(elem)
+{
+	var top = 0, left = 0;
+	while(elem)
+	{
+		top = top + parseInt(elem.offsetTop);
+		left = left + parseInt(elem.offsetLeft);
+		elem = elem.offsetParent;
+	}
+	return { top: top, left: left };
+};
+
+window.getOffset = function(elem)
+{
+	if (elem.getBoundingClientRect)
+		return getOffsetRect(elem);
+	else
+		return getOffsetSum(elem);
+};
+
+})();