jscookmenu.js

商城改进板全站代码

		return horiz;
	var body = document.body;
	var browserLeft;
	var browserRight;
	if (window.innerWidth)
	{
		// DOM window attributes
		browserLeft = window.pageXOffset;
		browserRight = window.innerWidth + browserLeft;
	}
	else if (body.clientWidth)
	{
		// IE attributes
		browserLeft = body.clientLeft;
		browserRight = body.clientWidth + browserLeft;
	}
	else
		return horiz;
	if (mode.charAt (0) == 'h')
	{
		if (horiz == 'r' && (cmGetXAt (obj) + subMenuWidth) > browserRight)
			horiz = 'l';
		if (horiz == 'l' && (cmGetXAt (obj) + cmGetWidth (obj) - subMenuWidth) < browserLeft)
			horiz = 'r';
		return horiz;
	}
	else
	{
		if (horiz == 'r' && (cmGetXAt (obj, p) + cmGetWidth (obj) + subMenuWidth) > browserRight)
			horiz = 'l';
		if (horiz == 'l' && (cmGetXAt (obj, p) - subMenuWidth) < browserLeft)
			horiz = 'r';
		return horiz;
	}
}

//
// show the subMenu w/ specified orientation
// also move it to the correct coordinates
//
function cmShowSubMenu (obj, isMain, subMenu, menuInfo)
{
	var prefix = menuInfo.prefix;

	if (!subMenu.cmParentMenu)
	{
		// establish the tree w/ back edge
		var thisMenu = cmGetThisMenu (obj, prefix);
		subMenu.cmParentMenu = thisMenu;
		if (!thisMenu.cmSubMenu)
			thisMenu.cmSubMenu = new Array ();
		thisMenu.cmSubMenu[thisMenu.cmSubMenu.length] = subMenu;
	}

	var effectInstance = subMenu.cmEffect;
	if (effectInstance)
		effectInstance.showEffect (true);
	else
	{
		// position the sub menu only if we are not already showing the submenu
		var orient = cmMoveSubMenu (obj, isMain, subMenu, menuInfo);
		subMenu.cmOrient = orient;

		var forceShow = false;
		if (subMenu.style.visibility != 'visible' && menuInfo.nodeProperties.effect)
		{
			try
			{
				effectInstance = menuInfo.nodeProperties.effect.getInstance (subMenu, orient);
				effectInstance.showEffect (false);
			}
			catch (e)
			{
				forceShow = true;
				subMenu.cmEffect = null;
			}
		}
		else
			forceShow = true;

		if (forceShow)
		{
			subMenu.style.visibility = 'visible';
			/*@cc_on
				@if (@_jscript_version >= 5.5)
					if (subMenu.cmFrameObj)
						subMenu.cmFrameObj.style.display = 'block';
				@end
			@*/
		}
	}

	if (!_cmHideObjects)
	{
		_cmHideObjects = 2;	// default = not hide, may change behavior later
		try
		{
			if (window.opera)
			{
				if (parseInt (navigator.appVersion) < 9)
					_cmHideObjects = 1;
			}
		}
		catch (e)
		{
		}
	}

	if (_cmHideObjects == 1)
	{
		if (!subMenu.cmOverlap)
			subMenu.cmOverlap = new Array ();
		cmHideControl ("IFRAME", subMenu);
		cmHideControl ("OBJECT", subMenu);
	}
}

//
// reset all the menu items to class MenuItem in thisMenu
//
function cmResetMenu (thisMenu, prefix)
{
	if (thisMenu.cmItems)
	{
		var i;
		var str;
		var items = thisMenu.cmItems;
		for (i = 0; i < items.length; ++i)
		{
			if (items[i].cmIsMain)
			{
				if (items[i].className == (prefix + 'MainItemDisabled'))
					continue;
			}
			else
			{
				if (items[i].className == (prefix + 'MenuItemDisabled'))
					continue;
			}
			if (items[i].cmIsMain)
				str = prefix + 'MainItem';
			else
				str = prefix + 'MenuItem';
			if (items[i].className != str)
				items[i].className = str;
		}
	}
}

//
// called by the timer to hide the menu
//
function cmHideMenuTime ()
{
	_cmClicked = false;
	if (_cmCurrentItem)
	{
		var menuInfo = _cmMenuList[_cmCurrentItem.cmMenuID];
		var prefix = menuInfo.prefix;
		cmHideMenu (cmGetThisMenu (_cmCurrentItem, prefix), null, menuInfo);
		_cmCurrentItem = null;
	}
}

//
// Only hides this menu
//
function cmHideThisMenu (thisMenu, menuInfo)
{
	var effectInstance = thisMenu.cmEffect;
	if (effectInstance)
		effectInstance.hideEffect (true);
	else
	{
		thisMenu.style.visibility = 'hidden';
		thisMenu.style.top = '0px';
		thisMenu.style.left = '0px';
		thisMenu.cmOrient = null;
		/*@cc_on
			@if (@_jscript_version >= 5.5)
				if (thisMenu.cmFrameObj)
				{
					var frameObj = thisMenu.cmFrameObj;
					frameObj.style.display = 'none';
					frameObj.style.width = '1px';
					frameObj.style.height = '1px';
					thisMenu.cmFrameObj = null;
					cmFreeFrame (frameObj);
				}
			@end
		@*/
	}

	cmShowControl (thisMenu);
	thisMenu.cmItems = null;
}

//
// hide thisMenu, children of thisMenu, as well as the ancestor
// of thisMenu until currentMenu is encountered.  currentMenu
// will not be hidden
//
function cmHideMenu (thisMenu, currentMenu, menuInfo)
{
	var prefix = menuInfo.prefix;
	var str = prefix + 'SubMenu';

	// hide the down stream menus
	if (thisMenu.cmSubMenu)
	{
		var i;
		for (i = 0; i < thisMenu.cmSubMenu.length; ++i)
		{
			cmHideSubMenu (thisMenu.cmSubMenu[i], menuInfo);
		}
	}

	// hide the upstream menus
	while (thisMenu && thisMenu != currentMenu)
	{
		cmResetMenu (thisMenu, prefix);
		if (thisMenu.className == str)
		{
			cmHideThisMenu (thisMenu, menuInfo);
		}
		else
			break;
		thisMenu = cmGetThisMenu (thisMenu.cmParentMenu, prefix);
	}
}

//
// hide thisMenu as well as its sub menus if thisMenu is not
// already hidden
//
function cmHideSubMenu (thisMenu, menuInfo)
{
	if (thisMenu.style.visibility == 'hidden')
		return;
	if (thisMenu.cmSubMenu)
	{
		var i;
		for (i = 0; i < thisMenu.cmSubMenu.length; ++i)
		{
			cmHideSubMenu (thisMenu.cmSubMenu[i], menuInfo);
		}
	}
	var prefix = menuInfo.prefix;
	cmResetMenu (thisMenu, prefix);
	cmHideThisMenu (thisMenu, menuInfo);
}

//
// hide a control such as IFRAME
//
function cmHideControl (tagName, subMenu)
{
	var x = cmGetX (subMenu);
	var y = cmGetY (subMenu);
	var w = subMenu.offsetWidth;
	var h = subMenu.offsetHeight;

	var i;
	for (i = 0; i < document.all.tags(tagName).length; ++i)
	{
		var obj = document.all.tags(tagName)[i];
		if (!obj || !obj.offsetParent)
			continue;

		// check if the object and the subMenu overlap

		var ox = cmGetX (obj);
		var oy = cmGetY (obj);
		var ow = obj.offsetWidth;
		var oh = obj.offsetHeight;

		if (ox > (x + w) || (ox + ow) < x)
			continue;
		if (oy > (y + h) || (oy + oh) < y)
			continue;

		// if object is already made hidden by a different
		// submenu then we dont want to put it on overlap list of
		// of a submenu a second time.
		// - bug fixed by Felix Zaslavskiy
		if(obj.style.visibility == 'hidden')
			continue;

		//subMenu.cmOverlap.push (obj);
		subMenu.cmOverlap[subMenu.cmOverlap.length] = obj;
		obj.style.visibility = 'hidden';
	}
}

//
// show the control hidden by the subMenu
//
function cmShowControl (subMenu)
{
	if (subMenu.cmOverlap)
	{
		var i;
		for (i = 0; i < subMenu.cmOverlap.length; ++i)
			subMenu.cmOverlap[i].style.visibility = "";
	}
	subMenu.cmOverlap = null;
}

//
// returns the main menu or the submenu table where this obj (menu item)
// is in
//
function cmGetThisMenu (obj, prefix)
{
	var str1 = prefix + 'SubMenu';
	var str2 = prefix + 'Menu';
	while (obj)
	{
		if (obj.className == str1 || obj.className == str2)
			return obj;
		obj = obj.parentNode;
	}
	return null;
}

//
// A special effect function to hook the menu which contains
// special effect object to the timer.
//
function cmTimeEffect (menuID, show, delayTime)
{
	window.setTimeout ('cmCallEffect("' + menuID + '",' + show + ')', delayTime);
}

//
// A special effect function.  Called by timer.
//
function cmCallEffect (menuID, show)
{
	var menu = cmGetObject (menuID);
	if (!menu || !menu.cmEffect)
		return;
	try
	{
		if (show)
			menu.cmEffect.showEffect (false);
		else
			menu.cmEffect.hideEffect (false);
	}
	catch (e)
	{
	}
}

//
// return true if this item is handled using default handlers
//
function cmIsDefaultItem (item)
{
	if (item == _cmSplit || item[0] == _cmNoAction || item[0] == _cmNoClick)
		return false;
	return true;
}

//
// returns the object baring the id
//
function cmGetObject (id)
{
	if (document.all)
		return document.all[id];
	return document.getElementById (id);
}

//
// functions that obtain the width of an HTML element.
//
function cmGetWidth (obj)
{
	var width = obj.offsetWidth;
	if (width > 0 || !cmIsTRNode (obj))
		return width;
	if (!obj.firstChild)
		return 0;
	// use TABLE's length can cause an extra pixel gap
	//return obj.parentNode.parentNode.offsetWidth;

	// use the left and right child instead
	return obj.lastChild.offsetLeft - obj.firstChild.offsetLeft + cmGetWidth (obj.lastChild);
}

//
// functions that obtain the height of an HTML element.
//
function cmGetHeight (obj)
{
	var height = obj.offsetHeight;
	if (height > 0 || !cmIsTRNode (obj))
		return height;
	if (!obj.firstChild)
		return 0;
	// use the first child's height
	return obj.firstChild.offsetHeight;
}

//
// functions that obtain the coordinates of an HTML element
//
function cmGetX (obj)
{
	if (!obj)
		return 0;
	var x = 0;

	do
	{
		x += obj.offsetLeft;
		obj = obj.offsetParent;
	}
	while (obj);
	return x;
}

function cmGetXAt (obj, elm)
{
	var x = 0;

	while (obj && obj != elm)
	{
		x += obj.offsetLeft;
		obj = obj.offsetParent;
	}
	if (obj == elm)
		return x;
	return x - cmGetX (elm);
}

function cmGetY (obj)
{
	if (!obj)
		return 0;
	var y = 0;
	do
	{
		y += obj.offsetTop;
		obj = obj.offsetParent;
	}
	while (obj);
	return y;
}

function cmIsTRNode (obj)
{
	var tagName = obj.tagName;
	return tagName == "TR" || tagName == "tr" || tagName == "Tr" || tagName == "tR";
}

//
// get the Y position of the object.  In case of TR element though,
// we attempt to adjust the value.
//
function cmGetYAt (obj, elm)
{
	var y = 0;

	if (!obj.offsetHeight && cmIsTRNode (obj))
	{
		var firstTR = obj.parentNode.firstChild;
		obj = obj.firstChild;
		y -= firstTR.firstChild.offsetTop;
	}

	while (obj && obj != elm)
	{
		y += obj.offsetTop;
		obj = obj.offsetParent;
	}

	if (obj == elm)
		return y;
	return y - cmGetY (elm);
}

//
// extract description from the menu item and set the status text
//
function cmSetStatus (item)
{
	var descript = '';
	if (item.length > 4)
		descript = (item[4] != null) ? item[4] : (item[2] ? item[2] : descript);
	else if (item.length > 2)
		descript = (item[2] ? item[2] : descript);
    
	window.status = descript;
}

//
// debug function, ignore :)
//
function cmGetProperties (obj)
{
	if (obj == undefined)
		return 'undefined';
	if (obj == null)
		return 'null';

	var msg = obj + ':\n';
	var i;
	for (i in obj)
		msg += i + ' = ' + obj[i] + '; ';
	return msg;
}