// Event handlers ---------------------------------------------------------------------------------

// Positions the subgroup for the given item, and initiates its expansion 
function itemOver(item, subGroup, expandDirection, horAdj, verAdj, expandDelay, effect) 
{
	var newLeft = 0; 
	var newTop = 0; 
	var oItem = document.all[item]; 
	var oSubGroup = document.all[subGroup]; 
	  
	if (aspnm_curItem != item)
	{
		aspnm_curItem = item; 
		
		switch (expandDirection)
		{
			case 'belowleft': 
				newLeft = aspnm_pageX(oItem); 
				if (newLeft + oSubGroup.offsetWidth > window.document.body.clientWidth)
				{
					newLeft = aspnm_pageX(oItem) + oItem.offsetWidth - oSubGroup.offsetWidth;
				}
				newTop = aspnm_pageY(oItem) + oItem.offsetHeight; 
				break; 
			case 'belowright': 
				newLeft = aspnm_pageX(oItem) + oItem.offsetWidth - oSubGroup.offsetWidth; 
				newTop =  aspnm_pageY(oItem) + oItem.offsetHeight; 
				break; 
			case 'aboveleft': 
				newLeft = aspnm_pageX(oItem); 
				newTop =  aspnm_pageY(oItem) - oSubGroup.offsetHeight; 
				break; 
			case 'aboveright': 
				newLeft = aspnm_pageX(oItem) + oItem.offsetWidth - oSubGroup.offsetWidth; 
				newTop =  aspnm_pageY(oItem) - oSubGroup.offsetHeight; 
				break; 
			case 'rightdown': 
				newLeft = aspnm_pageX(oItem) + oItem.offsetWidth; 
				if (newLeft + oSubGroup.offsetWidth > window.document.body.clientWidth)
				{
					newLeft = aspnm_pageX(oItem) - oSubGroup.offsetWidth;
				}
				newTop = aspnm_pageY(oItem); 
				if (newTop + oSubGroup.offsetHeight > window.document.body.clientHeight)
				{
					newTop = aspnm_pageY(oItem) - oSubGroup.offsetHeight + oItem.offsetHeight;
				} 
				break; 
			case 'rightup': 
				newLeft = aspnm_pageX(oItem) + oItem.offsetWidth; 
				newTop = aspnm_pageY(oItem) - oSubGroup.offsetHeight + oItem.offsetHeight; 
				break; 
			case 'leftdown': 
				newLeft = aspnm_pageX(oItem) - oSubGroup.offsetWidth; 
				newTop = aspnm_pageY(oItem); 
				break; 
			case 'leftup': 
				newLeft = aspnm_pageX(oItem) - oSubGroup.offsetWidth; 
				newTop = aspnm_pageY(oItem) - oSubGroup.offsetHeight + oItem.offsetHeight; 
				break; 
			default: 
				newLeft = aspnm_pageX(oItem) + oItem.offsetWidth; 
				newTop = aspnm_pageY(oItem); 
				break; 
		}  
		newLeft += horAdj; 
		newTop += verAdj; 
		if (newTop < 0)
		{
			newTop = 0; 
		}
		if (newLeft < 0)
		{
			newLeft = 0;
		}
		
		oSubGroup.style.left = newLeft + 'px'; 
		oSubGroup.style.top = newTop + 'px'; 
		
		aspnm_startExpand(subGroup, expandDelay, effect); 
	}
}

// If the mouse pointer is not over the given item or its subGroup, 
// this function initiates the collapse of the subGroup. 
function itemOut(item, group, subGroup, expandDelay, effect)
{
	if ((!(aspnm_isMouseOnObject(item))) && subGroup)
	{
		if (!(aspnm_isMouseOnObject(subGroup)))
		{
			aspnm_curItem = ''; 
			aspnm_startCollapse(subGroup, expandDelay, effect);
		}  
	}
}

// This event handler is only called on expandable groups. If collapseAll is pending, it sets the 
// global variable aspnm_restoredGroup to the given group, so that the group and its parent groups 
// are not collapsed. It also stops the collapse if it has been issued for this group. 
function groupOver(group)
{
	if (aspnm_collapsingAll)
	{
		aspnm_restoredGroup = group; 
	}
	
	if (aspnm_collapsingGroup == group) 
	{
		aspnm_stopCollapse(); 
		aspnm_stopExpand(); 
	}
}

// If the mouse pointer is on the given group, its subGroup, or its parent item this function 
// does nothing. If the pointer is over the parent group, but outside the parent item, then it
// initiates the collapse of itself and its subGroup (if any). 
// Otherwise, the pointer is outside the menu structure and it initiates the collapse of all 
// expanded objects. 
function groupOut(group, parentItem, parentGroup, expandDelay, effect)
{ 
	if (!(aspnm_isMouseOnObject(group)))
	{
		aspnm_curItem = ''; 
		
		var subGroup = aspnm_expandedObjects[aspnm_expandCount]; 
		if (subGroup == group)
		{
			subGroup = null; 
		}
		
		if ( (parentItem === null) && (parentGroup === null) && !(aspnm_isMouseOnObject(group)) )
		{
			aspnm_startCollapseAll(expandDelay, effect);
		}
		else if ( (aspnm_isMouseOnObject(group)) || (aspnm_isMouseOnObject(subGroup)) || (aspnm_isMouseOnObject(parentItem)) )
		{}	// do nothing 
		else if (aspnm_isMouseOnObject(parentGroup))
		{
			aspnm_startCollapse(group, expandDelay, effect); 
			aspnm_startCollapse(subGroup, expandDelay, effect); 
		}
		else
		{
			aspnm_startCollapseAll(expandDelay, effect);
		}
	}
}

// Expand/collapse timer functinos ----------------------------------------------------------------

// Initiates the expand of the given group. 
function aspnm_startExpand(group, interval, effect)
{
	if (group == aspnm_collapsingGroup)
	{
		aspnm_stopCollapse();
	}
	if (group != aspnm_expandingGroup)
	{
		aspnm_stopExpand();
	}
	
	aspnm_restoredGroup = group; 
	
	aspnm_expandingGroup = group; 
	if (group)
	{
		group += '.id';
	}
	if (effect)
	{
		effect = "'" + effect + "'";
	}
	aspnm_expandTimerID = window.setTimeout('aspnm_expand(' + group + ', ' + effect + ')', interval); 
}

// Initiates the collapse of the given group. 
function aspnm_startCollapse(group, interval, effect)
{
	if (group == aspnm_expandingGroup)
	{
		aspnm_stopExpand();
	}
	
	if (group)
	{ 
		if (document.all[group].style.visibility == 'visible') 
		{
			aspnm_collapsingGroup = group; 
			group += '.id'; 
			if (effect)
			{
				effect = "'" + effect + "'";
			}
			aspnm_collapseTimerID = window.setTimeout('aspnm_collapse(' + group + ', ' + effect + ')', interval); 
		}
	}
}

// Initiates the collapse of all expanded objects. 
function aspnm_startCollapseAll(interval, effect)
{
	aspnm_stopCollapse(); 
	aspnm_stopExpand(); 
	aspnm_stopCollapseAll(); 
	
	aspnm_collapsingAll = true; 
	if (effect) 
	{
		effect = "'" + effect + "'";  
		aspnm_collapseAllTimerID = window.setTimeout('aspnm_collapseAll(' + effect + ')', interval); 
	}
	else
	{
		aspnm_collapseAllTimerID = window.setTimeout('aspnm_collapseAll(null)', interval);
	}
}

// Stops the expand of the currently expanding group. 
function aspnm_stopExpand()
{
	window.clearTimeout(aspnm_expandTimerID); 
	aspnm_expandingGroup = ''; 
}

// Stops the collapse of the currently collapsing group. 
function aspnm_stopCollapse()
{
	window.clearTimeout(aspnm_collapseTimerID); 
	aspnm_collapsingGroup = ''; 
}

// Stops the collapse of all currently expanding objects. 
function aspnm_stopCollapseAll()
{
	window.clearTimeout(aspnm_collapseAllTimerID); 
	aspnm_restoredGroup = '';
}


// Core functions ---------------------------------------------------------------------------------

// Expands the given menu group 
function aspnm_expand(group, effect)
{
	if (document.all[group].style.visibility != 'visible')
	{
		aspnm_hideSelectElements(group); 
		if (effect) 
		{
			document.all[group].style.filter = effect; 
			document.all[group].filters[0].Apply(); 
		}  
		document.all[group].style.visibility = 'visible'; 
		aspnm_makeDropShadow(group); 
		if (effect)
		{
			document.all[group].filters[0].Play();
		}
		aspnm_expandCount += 1; 
		aspnm_expandedObjects[aspnm_expandCount] = group; 
	}  
}


// Collapses the given menu group 
function aspnm_collapse(group, effect)
{
	if (group) 
	{
		if (document.all[group].style.visibility != 'hidden')
		{
			if (effect)
			{
				document.all[group].style.filter = effect; 
				document.all[group].filters[0].Apply(); 
			}
			document.all[group].style.visibility = 'hidden';     
			if (effect)
			{
				document.all[group].filters[0].Play();
			}
			aspnm_expandCount -= 1; 
			aspnm_clearDropShadow(group); 
		}      
	}
	if (!(aspnm_contextUp) && aspnm_expandCount === 0)
	{
		aspnm_restoreSelectElements();
	}
}

// Collapses all expanded menu groups 
function aspnm_collapseAll(effect)
{
	for (var i = aspnm_expandCount; i >= 1; i -= 1)
	{
		if (aspnm_expandedObjects[i] == aspnm_restoredGroup)
		{
			break;
		}
		
		if (effect)
		{
			document.all[aspnm_expandedObjects[i]].style.filter = effect; 
			document.all[aspnm_expandedObjects[i]].filters[0].Apply(); 
		}
		document.all[aspnm_expandedObjects[i]].style.visibility = 'hidden';
		aspnm_clearDropShadow(aspnm_expandedObjects[i]); 
		if (effect)
		{
			document.all[aspnm_expandedObjects[i]].filters[0].Play();
		}
	}
	
	aspnm_collapsingAll = false; 
	aspnm_expandCount = i;
	aspnm_restoredGroup = ''; 
	if (!(aspnm_contextUp) && aspnm_expandCount === 0)
	{
		aspnm_restoreSelectElements();
	}
}

// Hides all menu groups prior to calling ClientSideOnClick event handler
function aspnm_hideAllGroups()
{
	aspnm_curItem = ''; 
	aspnm_restoredGroup = ''; 
	aspnm_collapseAll(null); 
}

// Utilities --------------------------------------------------------------------------------------

// Updates menu item class, left icon, and right icon 
function aspnm_updateCell(Element, NewClassName, LeftImage, LeftImageSrc, RightImage, RightImageSrc, direction)
{  
	if (direction == 'out' && aspnm_isMouseOnObject(Element))
	{}   
	else  
	{    
		if (Element !== null & NewClassName !== '')
		{
			document.all[Element].className = NewClassName;
		}
		if (LeftImage !== null  && LeftImageSrc !== '')
		{
			document.images[LeftImage].src = LeftImageSrc;     
		}
		if (RightImage !== null && RightImageSrc !== '')
		{
			document.images[RightImage].src = RightImageSrc;   
		}
	}
}

// Determines whether the mouse pointer is currently over the given object 
function aspnm_isMouseOnObject(objName)
{
	if (objName)
	{
		var objLeft = aspnm_pageX(document.all[objName]) - window.document.body.scrollLeft + 1; 
		var objTop = aspnm_pageY(document.all[objName]) - window.document.body.scrollTop + 1; 
		var objRight = objLeft + document.all[objName].offsetWidth - 1; 
		var objBottom = objTop + document.all[objName].offsetHeight - 1;

		var moEvent = window.event;
		if ((moEvent.x > objLeft) && (moEvent.x < objRight) && 
		    (moEvent.y > objTop) && (moEvent.y < objBottom))
		{
			return true; 
		}
	}
}

// Calculates the absolute page x coordinate of any element
function aspnm_pageX(element)
{
	var x = 0;
	do 
	{
		if (element.style.position == 'absolute') 
		{
			return x + element.offsetLeft; 
		}
		else
		{
			x += element.offsetLeft;
			if (element.offsetParent)
			{
				if (element.offsetParent.tagName == 'TABLE')
				{
					if (parseInt(element.offsetParent.border) > 0)
					{
					  x += 1; 
					}
				}
			}
		}
	}	while ((element = element.offsetParent));
	return x; 
}

// Calculates the absolute page y coordinate of any element
function aspnm_pageY(element)
{
	var y = 0;
	do 
	{
		if (element.style.position == 'absolute') 
		{
			return y + element.offsetTop; 
		}
		else
		{
			y += element.offsetTop;
			if (element.offsetParent)
			{
				if (element.offsetParent.tagName == 'TABLE')
				{
					if (parseInt(element.offsetParent.border) > 0)
					{
						y += 1; 
					}
				}
			}
		}
	}	while ((element = element.offsetParent));
	return y; 
}


// Hides HTML select elements that are overlapping the given menu group 
function aspnm_hideSelectElements(group)
{
	if (document.getElementsByTagName) 
	{
		var arrElements = document.getElementsByTagName('select'); 
		if (aspnm_hideSelectElems) 
		{
			for (var i = 0; i < arrElements.length; i += 1)
			{
				if (aspnm_objectsOverlapping(document.all[group], arrElements[i]))
				{
					arrElements[i].style.visibility = 'hidden';
				}
			}
		}
	}
}

// Restores all HTML select elements on the page 
function aspnm_restoreSelectElements()
{
	if (document.getElementsByTagName) 
	{
		var arrElements = document.getElementsByTagName('select'); 
		if (aspnm_hideSelectElems)
		{
			for (var i = 0; i < arrElements.length; i += 1)
			{
				arrElements[i].style.visibility = 'visible';
			}
		}
	}
}

// Whether the given objects are overlapping 
function aspnm_objectsOverlapping(obj1, obj2)
{
	var result = true; 
	var obj1Left = aspnm_pageX(obj1) - window.document.body.scrollLeft; 
	var obj1Top = aspnm_pageY(obj1) - window.document.body.scrollTop; 
	var obj1Right = obj1Left + obj1.offsetWidth; 
	var obj1Bottom = obj1Top + obj1.offsetHeight;
	var obj2Left = aspnm_pageX(obj2) - window.document.body.scrollLeft; 
	var obj2Top = aspnm_pageY(obj2) - window.document.body.scrollTop; 
	var obj2Right = obj2Left + obj2.offsetWidth; 
	var obj2Bottom = obj2Top + obj2.offsetHeight;
	
	if (obj1Right <= obj2Left || obj1Bottom <= obj2Top || 
	    obj1Left >= obj2Right || obj1Top >= obj2Bottom)
	{
		result = false;
	}
	return result; 
}

// Creates a drop shadow for an object 
function aspnm_makeDropShadow(objName)
{
	if (aspnm_shadowEnabled) 
	{
		aspnm_shadows[objName] = new Array(); 
		for (var i = aspnm_shadowOffest; i > 0; i -= 1)
		{
			var obj = document.all[objName]; 
			var rect = document.createElement('div');
			var rs = rect.style;
			rs.position = 'absolute';
			rs.left = (obj.style.posLeft + i) + 'px';
			rs.top = (obj.style.posTop + i) + 'px';
			rs.width = obj.offsetWidth + 'px';
			rs.height = obj.offsetHeight + 'px';
			rs.zIndex = obj.style.zIndex - i;
			rs.backgroundColor = aspnm_shadowColor;
			var opacity = 1 - i / (i + 1);
			rs.filter = 'alpha(opacity=' + (100 * opacity) + ')';
			obj.insertAdjacentElement('afterEnd', rect);
			aspnm_shadows[objName][aspnm_shadows[objName].length] = rect; 
		}
	}
}

// Clears the drop shadow for the given object 
function aspnm_clearDropShadow(objName)
{
	if (aspnm_shadowEnabled) 
	{
		var curShadow; 
		for (var i = 0; i < aspnm_shadows[objName].length; i += 1)
		{
			curShadow = aspnm_shadows[objName][i]; 
			curShadow.style.filter = 'alpha(opacity=0)'; 
			curShadow.removeNode(true); 
		}
	}  
}

// Positions the menu based on the alignment, offsetX, and offsetY properties
function aspnm_positionMenu(menu, alignment, offsetX, offsetY)
{
	var scrlLeft = 0; 
	var scrlTop = 0;
	var clientW = window.document.body.clientWidth; 
	var clientH = window.document.body.clientHeight; 
	var menuWidth = menu.offsetWidth; 
	var menuHeight = menu.offsetHeight; 
	var newLeft = 0; 
	var newTop = 0; 
	
	switch (alignment)
	{
		case 'topleft': 
			newLeft = scrlLeft;
			newTop = scrlTop;
			break; 
		case 'topmiddle': 
			newLeft = (clientW - menuWidth) / 2 + scrlLeft;
			newTop = scrlTop;
			break; 
		case 'topright': 
			newLeft = clientW + scrlLeft - menuWidth;
			newTop = scrlTop;
			break; 
		case 'bottomleft': 
			newLeft = scrlLeft;
			newTop = clientH + scrlTop - menuHeight;
			break; 
		case 'bottommiddle': 
			newLeft = (clientW - menuWidth) / 2 + scrlLeft;
			newTop = clientH + scrlTop - menuHeight;
			break; 
		case 'bottomright': 
			newLeft = clientW + scrlLeft - menuWidth;
			newTop = clientH + scrlTop - menuHeight;
			break; 
		default: 
			newLeft = clientW + scrlLeft;
			newTop = clientH + scrlTop;
			break; 
	}    
	
	newLeft += offsetX; 
	newTop += offsetY; 
	menu.style.left = newLeft; 
	menu.style.top = newTop; 
}

// ASP.NET Menu global variables ------------------------------------------------------------------
var aspnm_expandedObjects = new Array();  // array of expanded groups 
var aspnm_expandCount = 0;                // expanded group count 

var aspnm_expandTimerID = 0;			// timer for the current expanding group 
var aspnm_collapseTimerID = 0;			// timer for the current collapsing group 
var aspnm_collapseAllTimerID = 0;		// timer for collapseAll
var aspnm_expandingGroup = '';			// current expanding group name 
var aspnm_collapsingGroup = '';			// current collapsing group name 
var aspnm_restoredGroup = '';			// group that got focus after collapseAll has been called
var aspnm_collapsingAll = false;		// whether the collapseAll command is pending 
var aspnm_curItem = '';					// current menu item 
var aspnm_hideSelectElems = true;		// whether to hide HTML select elements 
var aspnm_shadows = new Array();		// used to hold shadow rectangles
var aspnm_shadowEnabled = true;			// whether shadow is enabled
var aspnm_shadowColor = '#808080';		// shadow color
var aspnm_shadowOffest = 4;				// shadow offset
var aspnm_contextUp = false;			// whether a context menu is up