// Add event handler to body when window loads
function addLoadEvent(func) {
	var oldonload = window.onload;
	
	if (typeof window.onload != "function") {
		window.onload = func;
	} else {
		window.onload = function () {
			oldonload();
			func();
		}
	}
}

addLoadEvent(function () {
	Callouts.fix();
	DocLinks.init();
	Cursors.init();
});

/*---------------------------------------------------------------------------+
| Cookie - Create/read/erase cookies                                         |
+---------------------------------------------------------------------------*/
var Cookie = {
    create: function (name, value, days) {
        if (days) {
            var date = new Date();
            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
            var expires = "; expires=" + date.toGMTString();
        }
        else var expires = "";
        document.cookie = name + "=" + value + expires + "; path=/";
    },

    read: function (name) {
        var nameEQ = name + "=";
        var ca = document.cookie.split(';');
        for (var i = 0; i < ca.length; i++) {
            var c = ca[i];
            while (c.charAt(0) == ' ') c = c.substring(1, c.length);
            if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
        }
        return null;
    },

    remove: function (name) {
        Cookie.create(name, "", -1);
    }
}


/*------------------------------------------------------------------------+
 | Callouts - Adjust widths of callouts depending on size of image within |
 +------------------------------------------------------------------------*/
var Callouts = {
	fix : function() {
		// Check for functionality
		if (!document.getElementById || !document.getElementsByTagName) return false;
		
		var bin = document.getElementById("content-body");
		if (!bin) return;
		
		var arrBins = bin.getElementsByTagName("*");
		var classRE = /call-[lr]/gi;
		
		// Set div width = largest image width
		for (var i = 0; i < arrBins.length; i++) {
			if (classRE.test(arrBins[i].className)) {
				var images = arrBins[i].getElementsByTagName("img");
				
				if (images.length >= 1) {
					var maxWidth = images[0].offsetWidth;
					
					for (var j = 0; j < images.length; j++) {
						var curWidth = images[j].offsetWidth;
						if (curWidth > maxWidth) maxWidth = curWidth;
					}
					
					//if (maxWidth > 100) {
						arrBins[i].style.width = maxWidth + "px";
					//}
				}
			}
		}
		
		return false;
	}
};


/*--------------------------------------------+
 | Cursors - Change cursor for sortable lists |
 +--------------------------------------------*/
var Cursors = {
	init : function() {
		// Check for functionality
		if (!document.getElementById || !document.getElementsByTagName) return false;
		
		var lists = document.getElementsByTagName("ul");
		
		for (var i = 0; i < lists.length; i++) {
			var curList = lists[i];
			
			if (curList.className.indexOf("sequence") > -1) {
				var listItems = curList.getElementsByTagName("li");
				for (var j = 0; j < listItems.length; j++) {
					listItems[j].onmousedown = function() { this.style.cursor = "url(/images/shared/grabbing.cur), move"; };
					listItems[j].onmouseup = function() { this.style.cursor = "url(/images/shared/grab.cur), move"; };
				}
			}
		}
	}
};


/*----------------------------------------------------------------+
 | DidMouseMove - Only use, prevent lightbox from showing on drag |
 +----------------------------------------------------------------*/
var DidMouseMove = {
	hash : {},

	recordDown : function(event)
	{
		var element = Event.element(event);
		DidMouseMove.hash[element.id] = new Array();
		DidMouseMove.hash[element.id][0] = event.screenX;
		DidMouseMove.hash[element.id][1] = event.screenY;
	},
	
	stopEventIfItDid : function(event)
	{
		var element = Event.element(event);
		if (!(DidMouseMove.hash[element.id][0] == event.screenX
			&& DidMouseMove.hash[element.id][1] == event.screenY))
			event.stop();
	}
};


/*----------------------------------------------+
 | DocLinks - Add icon after links to documents |
 +----------------------------------------------*/
var DocLinks = {
	init : function() {
		// Find all links
		var links = document.getElementsByTagName("a");
		
		for (var i = 0; i < links.length; i++) {
			var theLink = links[i];
			var address = theLink.href.toLowerCase();
			
			// Don't add icon to links styled to look different
			if (theLink.className.indexOf("btn-fancy") == -1) {
				// Check if link points to files with common extensions
				var matches = address.match(/\.(doc|pdf|xls|ppt)/);
				
				if (matches) {
					// Using "match" always returns two results (not sure why)
					var ext = matches[0].substr(1, 3);
					
					// Create new image and insert it
					var newImg = document.createElement("img");
					newImg.alt = "(" + ext.toUpperCase() + ")";
					newImg.className = "icon";
					newImg.src = "/content/images/shared/icon-" + ext + ".gif";
					newImg.title = newImg.alt;
					
					if (theLink.getElementsByTagName("img").length <= 0)
						theLink.parentNode.insertBefore(newImg, theLink);
					
					// Make link open in new window/tab
					theLink.onclick = function () {
						window.open(this.href);
						return false;
					};
				}
			}
		}
	}
};