// Name: Yorumcu-www-context menu
// Date: 26-01-2009
// Ver : 1.0.1
// ContextMenu.set("menu-id");
// ContextMenu.set("menu-element-id", "context-element-id");
// URL: http://www.openjs.com/scripts/ui/context_menu/

var ContextMenu = {
	"max_width"	: false, // The width,
	"max_height": false, // and height of the current window - to make sure that the menu dont go outside that limit.
	"menu"		: "",
	"context"	: "",
	"active_menu":"", // This will have the id of the current shown menu

	//Functions
	"_init":function() {
		var body = document.getElementsByTagName("body")[0];
		ContextMenu.max_width = body.clientWidth || body.offsetWidth;
		ContextMenu.max_height= body.clientHeight|| body.offsetHeight;
		ContextMenu._addEvent(window,"resize",ContextMenu._init);
	},

	/**
	 * This function binds a context menu list to the right click event.
	 * Arguments: menu_id - The ID of the ul/Li list that should be used as the Menu
	 * 			  context_id - [OPTIONAL] The ID of the element that would serve as the context for this menu. If none is specified, it defaults to 'document'
	 * Example: ContextMenu.set("menu-id");
	 * 			ContextMenu.set("menu-element-id", "context-element-id");
	 */
	"set": function(menu_id, context_id) {
		if(!ContextMenu.max_width) ContextMenu._init(); //Initalize the library if its not already done.
		if(!context_id) context_id = document;
		else if(typeof context_id == "string") context_id = document.getElementById(context_id);
		ContextMenu._addEvent(context_id, "contextmenu", function(e) {
			ContextMenu._stopEvent(e); //We don't want the browsers Context menu appearing - so disable it.
			ContextMenu.menu = menu_id;
			ContextMenu.context = context_id;
			ContextMenu._handleRightClick(e);
		});
	},

	"_handleRightClick":function(e) {
		e=e||window.event;
		//getScrollPosition
		var docBody=document.body;
		var docElem=document.documentElement;
		var scrollLeft=Math.max(docBody.scrollLeft, docElem.scrollLeft);
		var scrollTop=Math.max(docBody.scrollTop, docElem.scrollTop);
		//getMousePosition & corner
		var menu = document.getElementById(ContextMenu.menu);
		var left = (e.clientX + scrollLeft) - 1.65 * menu.offsetWidth;
		var top = (e.clientY + scrollTop) - menu.offsetHeight;
		if (left < 10) left = 10;
		if (left > 782) left = 782;
		if (top < scrollTop) top = scrollTop;
		ContextMenu.show(ContextMenu.menu, left, top);
	},

	/**
	 * Show the given list as the context menu at the provided coordinates
	 * Arguments: menu_id - The ID of the ul/Li list that should be used as the Menu
	 *			  left - The x value of where the menu should appear
	 * 			  top - The y value.
	 * Example: ContextMenu.show("menu-id", 200, 350);
	 */
	"show": function(menu_id, left, top) {
		ContextMenu.hide(); //Remove any existing menus.
		left=left||0;top=top||0;//Default values for top and left
		var menu = document.getElementById(menu_id);
		menu.style.top = top + "px";
		menu.style.left = left + "px";
		menu.style.zIndex = 9999;
		menu.style.visibility= "visible";
		setTimeout("ContextMenu._addEvent(document,'click', ContextMenu.hide);", 200);
		ContextMenu.active_menu = menu_id;
		//if (!bHideAds) __rw(1000);
	},

	/**
	 * Hides the currently displayed menu.
	 * Example: ContextMenu.hide();
	 */
	"hide": function() {
		if(!ContextMenu.active_menu) return;
		ContextMenu._removeEvent(document,"click", ContextMenu.hide);
		document.getElementById(ContextMenu.active_menu).style.visibility = "hidden";
		ContextMenu.active_menu = "";
	},


	/////////////////////////////// Library Functions ///////////////////////////////
	"_stopEvent": function(e) {
		e=e||window.event;
		e.cancelBubble = true;
		e.returnValue = false;
		if(e.stopPropagation) e.stopPropagation();
		if(e.preventDefault) e.preventDefault();
		return false;
	},

	"_addEvent" :function(ele,type,func,capture) {
		if(typeof ele == "string") ele = document.getElementById(ele);
		if(ele.attachEvent) return ele.attachEvent('on' + type, func);
		else if(ele.addEventListener) ele.addEventListener(type, func, false);
		else ele['on' + type] = func;
	},

	"_removeEvent": function(ele, type, func) {
		if(typeof ele == "string") ele = document.getElementById(ele);
		if(ele.removeEventListener) ele.removeEventListener(type, func, false);
		else if(ele.detachEvent) ele.detachEvent('on' + type, func);
		else if(ele['on' + type]) delete ele['on' + type];
	}
};