/***********************************************
* AnyLink Drop Down Menu- © Dynamic Drive (www.dynamicdrive.com )
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

var menu_a=new Array()
menu_a[0]= new Array ("water_supply.html","Water Supply");
menu_a[1]= new Array ("environment.html", "Environment");

var menu_b=new Array()
menu_b[0]= new Array ("levee.html", "Fragile Levee");
menu_b[1]= new Array ("smelt.html", "Delta Smelt Decrease");
menu_b[2]= new Array ("pollution1.html", "Water Pollution (1)");
menu_b[3]= new Array ("pollution2.html", "Water Pollution (2)");
menu_b[4]= new Array ("geology.html", "Geology");

var menu_gis=new Array ();
menu_gis [0]	= new Array ("javascript:openTask (\'../Module1/GISMain.html\');closeWindow()", "GIS Home page");
menu_gis [1]	= new Array ("javascript:openTask (\'../Module1/Navigation.html\');closeWindow()", "Navigation");
menu_gis [2]	= new Array ("javascript:openTask (\'../Module1/MapScale.html\');closeWindow()", "Map Scale");
menu_gis [3]	= new Array ("javascript:openTask (\'../Module1/Location.html\');closeWindow()", "Location");
menu_gis [4]	= new Array ("javascript:openTask (\'../Module1/GISLayers.html\');closeWindow()", "GIS Layers");
menu_gis [5]	= new Array ("javascript:openTask (\'../Module1/Glossary_page.html\');closeWindow()", "Glossary");


//var menu_a=new Array()
//menu_a[0]='<a href="water_supply.html">Water Supply</a>'
//menu_a[1]='<a href="environment.html"><font color="#DDDDDD">Environment</font></a>'

//var menu_b=new Array()
//menu_b[0]='<a href="levee.html">Fragile Levee</a>'
//menu_b[1]='<a href="smelt.html">Delta Smelt Decrease</a>'
//menu_b[2]='<a href="pollution1.html">Water Pollution (1)</a>'
//menu_b[3]='<a href="pollution2.html">Water Pollution (2)</a>'
//menu_b[4]='<a href="geology.html">Geology</a>'
		
var menuwidth='1.7in' //default menu width
var menubgcolor='lightyellow'  //menu bgcolor
var theSelectedItemColor	= '#909090';
var disappeardelay=250  //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick="yes" //hide menu when user clicks within menu?

/////No further editting needed

var ie4=document.all
var ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="dropmenudiv" style="visibility:hidden;width:'+menuwidth+';background-color:'+menubgcolor+'" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(what, offsettype){
	var totaloffset	= (offsettype=="left") ? what.offsetLeft : what.offsetTop;
	var parentEl	= what.offsetParent;
	while (parentEl!=null) {
		totaloffset		= (offsettype=="left") ? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
		parentEl		= parentEl.offsetParent;
	}
	return totaloffset;
}


function showhide(obj, e, visible, hidden, menuwidth)
{
   if (ie4||ns6)
      dropmenuobj.style.left=dropmenuobj.style.top="-500px"
   if (menuwidth!="")
   {
      dropmenuobj.widthobj=dropmenuobj.style
      dropmenuobj.widthobj.width=menuwidth
   }
   if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
      obj.visibility=visible
   else if (e.type=="click")
   obj.visibility=hidden
}

function iecompattest(){
	return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge)
{
   var edgeoffset = 0
   
   if (whichedge=="rightedge")
   {
      var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
      dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
      if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
         edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
   }
   else
   {
      var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
      var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
      dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
      if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure)
      { //move up?
         edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
         if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either? 
            edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
      }
   }
   return edgeoffset
}

function populatemenu(what, theCurrentMenuItem){
	if (ie4||ns6)
		var tempMenu = new Array (what.length);
		for (i=0; i<what.length; i++)	{
			tempMenu [i]   = '<a href=\"' + what [i][0] + '\">' + what [i][1] + '</a>';
			if (what[i][1] == theCurrentMenuItem) {
				tempMenu [i]   = '<font color=\"' + theSelectedItemColor + '\">' + what [i][1] + '</font>';
			}
		}
	dropmenuobj.innerHTML = tempMenu.join("")
}


function dropdownmenu(obj, e, menucontents, currentItem, menuwidth)
{
   if (window.event) 
      event.cancelBubble = true
   else if (e.stopPropagation) 
      e.stopPropagation()
   clearhidemenu()
   dropmenuobj=document.getElementById ? document.getElementById("dropmenudiv") : dropmenudiv
   populatemenu(menucontents, currentItem);

   if (ie4||ns6)
   {
      showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
      dropmenuobj.x=getposOffset(obj, "left")
      dropmenuobj.y=getposOffset(obj, "top")
      dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
      dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
   }

   theReturnValue	= clickreturnvalue();

   return 
}

function clickreturnvalue(){
	if (ie4||ns6) return false
	else return true
}

function contains_ns6(a, b) {
	while (b.parentNode)
		if ((b = b.parentNode) == a)
			return true;

	return false;
}

function dynamichide(e){
	if (ie4&&!dropmenuobj.contains(e.toElement))
		delayhidemenu()
	else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
		delayhidemenu()
}

function hidemenu(e){
	if (typeof dropmenuobj!="undefined"){
		if (ie4||ns6)
			dropmenuobj.style.visibility="hidden"
		}
}

function delayhidemenu() {
	if (ie4||ns6)
		delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu(){
	if (typeof delayhide!="undefined")
		clearTimeout(delayhide)
}

if (hidemenu_onclick=="yes")
	document.onclick=hidemenu