/* MC JavaScript Namespace and globlal methods */

var MC = function() {

	var _currentRating = 0;

	return {

		addLoadEvent: function(func) {
			var currentOnLoad = window.onload;
			if (typeof window.onload != 'function') {
				window.onload = func;
			} else {
				window.onload = function() {
					currentOnLoad();
					func();
				}
			}
		},

		getElementById: function(elementId) {
			if (document.getElementById) {
				return document.getElementById(elementId);
			} else if (document.all) {
				return document.all[elementId];
			} else {
				return null;
			}
		},

		formatCurrency: function(num) {
			num = num.toString().replace(/\$|\,/g, '');

			if (isNaN(num)) { num = "0" }

			sign = (num == (num = Math.abs(num)));
			num = Math.floor(num * 100 + 0.50000000001);
			cents = num % 100;
			num = Math.floor(num / 100).toString();

			if (cents < 10) { cents = "0" + cents; }

			for (var i = 0; i < Math.floor((num.length - (1 + i)) / 3); i++) {
				num = num.substring(0, num.length - (4 * i + 3)) + ',' + num.substring(num.length - (4 * i + 3));
			}

			return (((sign) ? '' : '-') + '$' + num + '.' + cents);
		},

		swapRatingImage: function(imageId, index, themePath) {
			var noneImageUrl = '/' + themePath + '/images/layout/rating-none.gif';
			var fullImageUrl = '/' + themePath + '/images/layout/rating-full.gif';

			for (var x = 1; x <= 5; x++) {
				var item = MC.getElementById(imageId.substring(0, imageId.length - 1) + x);

				if (item.nodeName == 'A') {
					item = item.firstChild;
				}

				if (x <= index) {
					item.src = fullImageUrl;
				} else {
					item.src = noneImageUrl;
				}
			}
		},

		resetRating: function(imageId, themePath) {
			MC.swapRatingImage(imageId, _currentRating, themePath);
		},

		getCurrentRating: function() {
			return _currentRating;
		},

		setCurrentRating: function(imageId, hiddenId, rating) {
			_currentRating = rating;
			MC.getElementById(hiddenId).value = rating;
		},

		limitInputLength: function(textarea, limit, counter) {
			var text = MC.fixNewline(textarea.value);

			if (text.length > limit) {
				text = text.substring(0, limit);
				textarea.value = text;
			}
			var hasInnerText = (document.getElementsByTagName("body")[0].innerText != undefined) ? true : false;
			var counterText = (limit - text.length) + " characters remaining.";

			if (hasInnerText) {
				document.getElementById(counter).innerHTML = counterText;
			} else {
				document.getElementById(counter).textContent = counterText;
			}
		},

		fixNewline: function(val) {
			if (val.indexOf('\r\n') != -1) {
				; // this is IE on windows. Puts both characters for a newline, no need to alter
			} else if (val.indexOf('\r') != -1) {
				val = val.replace(/\r/g, "\r\n");        // this is IE on a Mac. Need to add the line feed
			} else if (val.indexOf('\n') != -1) {
				val = val.replace(/\n/g, "\r\n");        // this is Firefox on any platform. Need to add carriage return
			} else {
				; // no newlines in the textarea  
			}

			return val;
		},

		toggle: function(toggle, item) {
			var element = MC.getElementById(item);

			if (element.style.display == "none") {
				element.style.display = "";
				toggle.innerHTML = 'collapse';
			} else {
				element.style.display = "none";
				toggle.innerHTML = 'expand';
			}
		},

		toggleChecked: function(rel, check) {
			if (!document.getElementsByTagName) return;

			var inputs = document.getElementsByTagName("input");

			for (var i = 0; i < inputs.length; i++) {
				var input = inputs[i];
				if (input.getAttribute("type") == "checkbox" && input.getAttribute("rel") == rel) {
					input.checked = check;
				}
			}
		},

		setupAspect: function(aspect, count, threshold) {
			var node;

			if (aspect.getElementsByClassName) {
				var nodes = aspect.getElementsByClassName("ref-current");

				if (nodes.length != 0) {
					node = nodes[0];
				}
			} else {
				var candidates = aspect.getElementsByTagName("li");

				for (var i = 0; i < candidates.length; ++i) {
					if (candidates[i].className = "ref-current") {
						node = candidates[i];
						break;
					}
				}
			}

			if (!node) return;

			var innerLists = node.getElementsByTagName("ul");
			if (innerLists == null || innerLists.length == 0) return;

			var innerList = innerLists[0];
			var items = innerList.getElementsByTagName("li");
			if (items.length <= threshold) return;

			var visible = true;

			var toggleAspect = function(anchor) {
				visible = !visible;

				for (var i = count; i < items.length - 1; ++i) {
					var item = items[i];

					if (visible) {
					    item.style.display = "";
					} else {
					    item.style.display = "none";
					}
				}

				anchor.innerHTML = visible ? "Show fewer&hellip;" : "Show more&hellip;";
			};

			var toggleItem = document.createElement("li")
			var toggleAnchor = document.createElement("a");

			toggleItem.setAttribute("class", "ref-toggle");
			toggleAnchor.setAttribute("href", "#");

			toggleAnchor.onclick = function() {
				toggleAspect(this);
				return false;
			};

			toggleItem.appendChild(toggleAnchor);
			innerList.appendChild(toggleItem);

			toggleAspect(toggleAnchor);
		}

	};
} ();


var Confirm = function() {

	return {

		addToCart: function(name, quantity) {
			alert(quantity + ' - ' + name + ' has been added to your cart.');
		},

		addToList: function(name, quantity) {
			alert(quantity + ' - ' + name + ' has been added to your shopping list.');
		},

		updateQuantity: function(name, quantity) {
			alert(name + ' quantity has been updated.');
		},

		outOfStock: function(name, quantity) {
			alert('The quantity you requested (' + quantity + ') is not currently in stock.');
		},

		unavailable: function(name, quantity) {
			alert('You are not allowed to purchase ' + name + '.');
		},

		reqQuestion: function(name, quantity) {
			alert('You must select options for ' + name + '.');
		},
		
		belowMinQty: function(name, quantity) {
			alert('You are not allowed to purchase fewer than ' + quantity + ' of ' + name + '.');
		},

		aboveMaxQty: function(name, quantity) {
			alert('You are not allowed to purchase more than ' + quantity + ' of ' + name + '.');
		}
	};
} ();


var Window = function() {
	var isNetscape = (navigator.appName == "Netscape") ? true : false;

	return {

		open: function(url, name, width, height, scrollbars, resizable) {
			var left = (screen.width - width) / 2;
			var top = (screen.height - height) / 2;
			resizable = 'yes';
			var properties = 'height=' + height + ',width=' + width + ',top=' + top + ',left=' + left + ',scrollbars=' + scrollbars + ',resizable=' + resizable + ',toolbar=0,location=0,statusbar=0,menubar=0';

			var win = window.open(url, 'win', properties);

			if (isNetscape) {
				win.window.focus();
			} else {
				win.focus();
			}
		},

		close: function(win) {
			win.close();
		},

		print: function(win) {
			win.print();
		},

		center: function(win) {
			var width, height;
			var left, top;

			width = win.outerWidth;
			height = win.outerHeight;

			if (win.document.layers || (win.document.getElementById && !win.document.all)) {
				width = win.outerWidth;
				height = win.outerHeight;
			} else if (win.document.all) {
				width = win.document.body.clientWidth;
				height = win.document.body.clientHeight;
			}

			left = (screen.width - width) / 2;
			top = (screen.height - height) / 2;

			if (parseInt(navigator.appVersion) >= 4) {
				window.moveTo(left, top);
			}
		},

		resizeToObject: function(imageId, extraWidth, extraHeight) {
			var image = MC.getElementById(imageId);
			var offsetTop = 100;
			var offsetLeft = 100;

			if (image) {
				width = (image.width + extraWidth);
				height = (image.height + extraHeight);

				if (height - offsetTop > screen.availHeight) { height = screen.availHeight - offsetTop; }
				if (width - offsetLeft > screen.availWidth) { width = screen.availWidth - offsetLeft; }

				window.moveTo(offsetLeft, offsetTop);
				window.resizeTo(width, height);
			}
		}

	};
} ();