// Event handlers

// Positions the subgroup for the given item, and initiates its expansion
function aspnm_itemMsOver(e,item, subGroup, expandDirection, horAdj, verAdj, expandDelay, effect)
{
  var newLeft = 0;
  var newTop = 0;
  var oItem = document.getElementById(item);
  var oSubGroup = document.getElementById(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;
      default:
        newLeft = aspnm_pageX(oItem) + oItem.offsetWidth;
        newTop = aspnm_pageY(oItem);
        break;
    }
    newLeft += horAdj;
    newTop += verAdj;
    oSubGroup.style.left = newLeft;
    oSubGroup.style.top = newTop;

    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 aspnm_itemMsOut(e,item, group, subGroup, expandDelay, effect)
{
  if ((!(aspnm_isMouseOnObject(e,item))) && subGroup)
    if (!(aspnm_isMouseOnObject(e,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 aspnm_groupMsOver(e,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 aspnm_groupMsOut(e,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 functions ----------------------------------------------------------------

// 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 = 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.getElementById(group).style.visibility == 'visible')
    {
      aspnm_collapsingGroup = group;
      group += '.id';
      if (effect) effect = "'" + effect + "'";
      aspnm_collapseTimerID = 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 = setTimeout('aspnm_collapseAll(' + effect + ')', interval);
  }
  else
    aspnm_collapseAllTimerID = setTimeout('aspnm_collapseAll(null)', interval);
}

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

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

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


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

// Expands the given menu group
function aspnm_expand(group, effect)
{
  if (document.getElementById(group).style.visibility != 'visible')
  {
    aspnm_hideSelectElements(group);
    if (effect)
    {
      document.getElementById(group).style.filter = effect;
      document.getElementById(group).filters[0].Apply();
    }
    document.getElementById(group).style.visibility = 'visible';
    aspnm_makeDropShadow(group);
    if (effect) document.getElementById(group).filters[0].Play();
    aspnm_expandCount++;
    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--;
      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--)
  {
    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(e,Element, NewClassName, direction)
{
  if (direction == 'out' && aspnm_isMouseOnObject(e,Element))
    ;
  else
  {
    if (Element != null & NewClassName != '') document.getElementById(Element).className = NewClassName;
  }
}

// Determines whether the mouse pointer is currently over the given object
function aspnm_isMouseOnObject(e,objName)
{
  if (objName)
  {
    var objLeft = aspnm_pageX(document.getElementById(objName)) - window.document.body.scrollLeft + 1;
    var objTop = aspnm_pageY(document.getElementById(objName)) - window.document.body.scrollTop + 1;
    var objRight = objLeft + document.getElementById(objName).offsetWidth - 1;
    var objBottom = objTop + document.getElementById(objName).offsetHeight - 1;
    if(window.event){
    	if ((event.x > objLeft) && (event.x < objRight) && (event.y > objTop) && (event.y < objBottom))
      	return true;
    	else
      	return false;
    }else{
    	if ((e.clientX > objLeft) && (e.clientX < objRight) && (e.clientY > objTop) && (e.clientY < objBottom))
      	return true;
    	else
      	return false;
    }

  }
  else
    return false;
}

// 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++)
        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++)
        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--)
	  {
	    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++)
    {
      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;
}


//this is for future feature.It's not ready yet, but the function is being used by the home page drop down menus
function getParentID(obj){
	var empty='';
	return empty;
}