/*
 * menuDropdown.js - implements an dropdown menu based on a HTML list
 * Author: Dave Lindquist (http://www.gazingus.org)
 */


var currentMenu = null; theTimeout=null;


if (!document.getElementById)
    document.getElementById = function() { return null; }


function initializeMenu(menuId, actuatorId) {
    var menu = document.getElementById(menuId);
    var actuator = document.getElementById(actuatorId);


    if (menu == null || actuator == null) return;


    //if (window.opera) return; // I'm too tired


    actuator.onmouseover = function() {
    	clearTimeout(theTimeout);


        if (currentMenu) {
            currentMenu.style.visibility = "hidden";
            this.showMenu();
        }
    }
  	menu.onmouseout=actuator.onmouseout=function(){
		clearTimeout(theTimeout);
		theTimeout=setTimeout(
			function(){
				if(currentMenu){
					currentMenu.style.visibility='hidden';
					currentMenu=null;
				}
			}
		, 2000);
	};
	menu.onmouseover=function(){
		clearTimeout(theTimeout);
	}
  
	actuator.onclick=function(e){
		if(!e)var e=window.event;
		e.cancelBubble=true;
		if(e.stopPropagation)e.stopPropagation();
		if(currentMenu==null)this.showMenu();
		else{
			currentMenu.style.visibility='hidden';
			currentMenu=null;
		}
		if(this.blur)this.blur();
		return false;
	};
	document.onclick=function(){
		if(currentMenu){
			currentMenu.style.visibility='hidden';
			currentMenu=null;
		}
	};


    actuator.showMenu = function() {
        menu.style.left = (this.offsetLeft - 1) + "px";
        menu.style.top = "98px";
        menu.style.visibility = "visible";
        currentMenu = menu;
    }
}




// Generic cookie set function
function setCookie(name, value, expires) {
document.cookie = name + "=" + escape(value) + "; path=/" +
((expires == null) ? "" : "; expires=" + expires.toGMTString());
}


// Retrieve cookie (if available)
function getCookie(name){
var cname = name + "=";               
var dc = document.cookie;             
    if (dc.length > 0) {              
    begin = dc.indexOf(cname);       
        if (begin != -1) {           
        begin += cname.length;       
        end = dc.indexOf(";", begin);
            if (end == -1) end = dc.length;
            return unescape(dc.substring(begin, end));
        } 
    }
return null;
}


// Set a cookie named bookmark with the url of the page as value.
function setBookmark () {
		var exp = new Date();   // make new date object
		exp.setTime(exp.getTime() + (1000 * 60 * 60 * 24 * 31)); // set it 31 days ahead
	  var url = document.URL;
		setCookie("bookmark", url, exp);      // save the cookie
}


// Function to determine if bookmark set
function gotoBookmark () {
   var cv = getCookie("bookmark"); 
	 if (cv == null) {                        
				document.write();         
        }        
    else {
    d = document
 	d.write("<a href='" + cv + "' onMouseOut='MM_swapImgRestore()' ")
 	d.write('onMouseOver="MM_swapImage(\'bmrk\',\'\',\'images/btn_go_ovr.gif\',1)"><img src="images/btn_go.gif" alt="Go To Bookmark" name="bmrk" title="" width="111" height="15"></a>'); 


    }
} 






//Mouseovers from Dreamweaver


function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}


function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}


function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}