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_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_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];}
}

function MM_changeProp(objName,x,theProp,theValue) { //v6.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)){
    if (theValue == true || theValue == false)
      eval("obj."+theProp+"="+theValue);
    else eval("obj."+theProp+"='"+theValue+"'");
  }
}


function expandNav(elem){
 	var mytable = document.getElementById(elem);
	 	
 	if(mytable.style.visibility == 'hidden' || mytable.style.visibility==''){
		mytable.style.visibility = 'visible';
 	} else {
		mytable.style.visibility = 'hidden'; 		
 	}
 }

var timerID;
var lastelem;

function closeNav(elem) {
	if (elem != null) {
		clearTimeout(timerID);
		var mytable = document.getElementById(elem);	
		mytable.style.visibility = 'hidden';
		MM_swapImage('nav_gap','','img/nav_selgapcolor.gif',1);
	
		switch (elem) {
   		case 'peoplenav' : 
			MM_swapImage('nav_sel','','img/nav_sel_down.gif',1);
      		MM_swapImage('nav_people','','img/nav_people.gif',1);
			MM_swapImage('nav_div1','','img/nav_divider.gif',1);
			MM_swapImage('nav_div2','','img/white.gif',1);
			MM_swapImage('nav_div3','','img/white.gif',1);
			break; 
		case 'expnav' : 
			MM_swapImage('nav_sel','','img/nav_sel_down.gif',1);
			MM_swapImage('nav_exp','','img/nav_exp.gif',1);
			MM_swapImage('nav_div1','','img/nav_divider.gif',1);
			MM_swapImage('nav_div3','','img/white.gif',1);
			break;
		}
	}
}

function navOver(elem) {
	if (elem != null) {
		closeNav(lastelem);
		clearTimeout(timerID);	
		var mytable = document.getElementById(elem);
		mytable.style.visibility = 'visible';
	
		switch (elem) {
    	case 'peoplenav' : 
			MM_swapImage('nav_div2','','img/nav_divider.gif',1);
			MM_swapImage('nav_div3','','img/nav_divider.gif',1);
			MM_swapImage('nav_sel','','img/nav_sel.gif',1);
      		MM_swapImage('nav_people','','img/nav_people_down.gif',1);
			MM_swapImage('nav_div1','','img/white.gif',1);
			MM_swapImage('nav_gap','','img/nav_peoplegapcolor.gif',1);
			break; 
		case 'expnav' : 
			MM_swapImage('nav_div3','','img/nav_divider.gif',1);
			MM_swapImage('nav_sel','','img/nav_sel.gif',1);
      		MM_swapImage('nav_exp','','img/nav_exp_down.gif',1);
			MM_swapImage('nav_div1','','img/white.gif',1);
			MM_swapImage('nav_gap','','img/nav_expgapcolor.gif',1);
			break;
		}	
	}		
}

function navOut(elem) {
	lastelem = elem;
	timerID = setTimeout("closeNav('"+elem+"')", 200);
	//closeNav(elem);
}


//javascript browser detection
var d, dom, ie, ie4, ie5x, moz, mac, win, lin, old, ie5mac, ie5xwin, op;

d = document;
n = navigator;
na = n.appVersion;
nua = n.userAgent;
win = ( na.indexOf( 'Win' ) != -1 );
mac = ( na.indexOf( 'Mac' ) != -1 );
lin = ( nua.indexOf( 'Linux' ) != -1 );

if ( !d.layers ){
	dom = ( d.getElementById );
	op = ( nua.indexOf( 'Opera' ) != -1 );
	konq = ( nua.indexOf( 'Konqueror' ) != -1 );
	saf = ( nua.indexOf( 'Safari' ) != -1 );
	moz = ( nua.indexOf( 'Gecko' ) != -1 && !saf && !konq);
	ie = ( d.all && !op );
	ie4 = ( ie && !dom );

	/*
	ie5x tests only for functionality. ( dom||ie5x ) would be default settings. 
	Opera will register true in this test if set to identify as IE 5
	*/

	ie5x = ( d.all && dom );
	ie5mac = ( mac && ie5x );
	ie5xwin = ( win && ie5x );
}

function initNav() {	
	if (ie) {		
		MM_changeProp('peoplenav', '', 'style.top', '215px', 'DIV');
		MM_changeProp('expnav', '', 'style.top', '215px', 'DIV');
		MM_changeProp('selnav', '', 'style.top', '215px', 'DIV');
		if (ie5mac) {	
			MM_changeProp('peoplenav', '', 'style.top', '212px', 'DIV');
			MM_changeProp('expnav', '', 'style.top', '212px', 'DIV');
			MM_changeProp('selnav', '', 'style.top', '212px', 'DIV');
		}	
	}	
}