/*
 * menuDropdown.js - implements an dropdown menu based on a HTML list
 *
 * Author: Gail Ransom 
 * Date:   2004
 */
// currentMenu points to the curently opened ('dropped down')
// menu if one is  open, or none if all are closed.
var currentMenu = null;
// If function data item getElementTagName doesnt exist, is 
// undefined or equals null, set it to be a function that 
// returns null.
if (!document.getElementTagName)
  document.getElementTagName = function () { return null; } 
//
// INITIALIZE DROP DOWN MENU
//
function initializeDropDownMenu() {
  // Get a node list of all the LI elements in the document.
  var lMenus = document.getElementsByTagName("LI");
  // Loop through each of the LI elements and process those that
  // are drop-down menus (these have a HTML attribute class="ddActuator")
  for (var i=0; i < lMenus.length; i++) {
    var mclassname = lMenus[i].className;
    if (mclassname.indexOf("ddActuator") >= 0) {
      // We have a menu! Get a nodelist of the menu's children. These will
      // be links (the menu 'actuator'), or lists (the dropdown part of the
      // menu). There are also (dont know why) text nodes (blank).
      var menuItems = lMenus[i].childNodes;
      for (var j=0; j < menuItems.length; j++) {
	// Loop through the menu components. If we find an actuator, set its
	// onmouseover and onclick events to show its dropdown part.
	if (menuItems[j].tagName == "A") {
	  var actuator = menuItems[j];
	  //
	  // ONMOUSEOVER event.
	  //
 	  actuator.onmouseover = function() {
	    if (currentMenu) {
	      // currentMenu is defined and doesnt equal null, so a menu is
	      // currently 'open'. Close the currently open menu and call
	      // 'showMenu' to open the one the mouse is now over.
	      // This means that once one menu is 'open', to open any other menu
	      // the user only has to pass the mouse over the actuator (rather
	      // than having to click on it)
	      currentMenu.style.visibility = "hidden";
	      this.showMenu();
	    } 
	  }
	  //
	  // ONCLICK event
	  //
	  actuator.onclick = function() {
	    if (currentMenu == null) { 
	      // No menu's are currently shown. Show the one the user has 
	      // just clicked on.
	      this.showMenu();
	    }
	    else {
	      // Close the currently open menu. (the user is clicking on
	      // the currently open menu - a result of the onmouseover
	      // behaviour.
	      currentMenu.style.visibility = "hidden";
	      currentMenu = null;
	    }
	    // Return false to prevent the browser from performing the 
	    // default action of following the A link.
	    return false;
	  }
	  //
	  // SHOW MENU function
	  //
	  actuator.showMenu = function() {
	    // The 'this' keyword refers to the actuator (in this case, the A tag
	    // that the user clicks on to open the menu).
	    // The menu to be shown is a sibling of this node, a UL.
	    var parent = this.parentNode;
	    // Assume that menu is the first UL encountered (there should only be one!)
	    menuTT = parent.getElementsByTagName("UL")[0];
	  if (menuTT != null) {
	//      alert("opening the menu");
	      menuTT.style.left = this.offsetLeft + "px";
	      menuTT.style.top = this.offsetTop + this.offsetHeight + "px";
	      menuTT.style.visibility = "visible";
	      currentMenu = menuTT;
	    }
	  } // End function actuator.showMenu()
	} // END if menu component tagName == A
      } // END loop through menu components
    } // END if LI element is a ddActuator
  } // END loop through each of the LI elements
} // END function initializeDropDownMenu()
function doMenuSplit() {
tString = temp;
if(tString !='') {
	tString = tString.split('^^');
	startLevel = ''
	htmlCode = '';
	for(i=0;i<tString.length;i++) {
		tStringLwr = tString[i].split('~')
		thisLevel = tStringLwr[0];
	
		if(thisLevel != startLevel) {
			startCode = tStringLwr[1] + '<ul>';
			// endCode = '</li></ul>' + startCode +'<ul>';
			endCode = '</li></ul>' + startCode;
			htmlCode = (i==0) ? startCode: htmlCode + endCode;
			htmlCode = htmlCode + tStringLwr[2];
			startLevel = thisLevel
		} else {
			htmlCode = htmlCode + tStringLwr[2];
		}
		htmlCode = (i==tString.length-1) ? htmlCode + '</li></ul>' : htmlCode;
	}
	if(document.all) {
		document.all.item('menu').innerHTML = htmlCode;
	}else{
		document.getElementById('menu').innerHTML = htmlCode;
	}
}
}