function show_div(div_name)
{
	document.getElementById('lot_access').style.visibility = 'hidden';
	document.getElementById('calendar').style.visibility = 'hidden';
	document.getElementById('engineering').style.visibility = 'hidden';
	document.getElementById('admin').style.visibility = 'hidden';
	document.getElementById('cis').style.visibility = 'hidden';
	document.getElementById(div_name).style.visibility = 'visible';
	document.getElementById('lot_access_tab').style.backgroundColor = '#EEEEEE';
	document.getElementById('calendar_tab').style.backgroundColor = '#EEEEEE';
	document.getElementById('engineering_tab').style.backgroundColor = '#EEEEEE';
	document.getElementById('admin_tab').style.backgroundColor = '#EEEEEE';
	document.getElementById('cis_tab').style.backgroundColor = '#EEEEEE';
	document.getElementById(div_name + '_tab').style.backgroundColor = '#EEEEFF';
}

function showHide(elementid){
if (document.getElementById(elementid).style.display == ''){
document.getElementById(elementid).style.display = 'none';
} else {
document.getElementById(elementid).style.display = '';
}
} 


function toggleLayer(whichLayer)
{
if (document.getElementById)
{
// this is the way the standards work
var style2 = document.getElementById(whichLayer).style;
style2.display = style2.display? "":"block";
}
else if (document.all)
{
// this is the way old msie versions work
var style2 = document.all[whichLayer].style;
style2.display = style2.display? "":"block";
}
else if (document.layers)
{
// this is the way nn4 works
var style2 = document.layers[whichLayer].style;
style2.display = style2.display? "":"block";
}
}


var doAlerts=false;
function changeSheets(whichSheet){
  whichSheet=whichSheet-1;
  if(document.styleSheets){
    var c = document.styleSheets.length;
    if (doAlerts) alert('Change to Style '+(whichSheet+1));
    for(var i=0;i<c;i++){
      if(i!=whichSheet){
        document.styleSheets[i].disabled=true;
      }else{
        document.styleSheets[i].disabled=false;
      }
    }
  }
}


function PopImg(picURL,picTitle,w,h,pos,scroll,picText){
if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
newWindow=window.open(picURL,'newWin',',width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrolling='+scroll+',toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no')
newWindow.document.write('<html><title>'+picTitle+'<\/title><head><\/head><body topmargin="0" leftmargin="0"><img src="'+picURL+'"alt="'+picText+'"><\/body><\/html>')
newWindow.focus()
}

//button rollovers
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];}}
}

//preloads images for navigation rollovers and menu rollovers
function preload() {
    MM_preloadImages('/Portals/0/photo_bg.png','/Portals/0/indian.png','/Portals/0/mid_shad.png','/Portals/0/swoosh.png','/Portals/0/top_shad.png','/Portals/0/westville_schools.png');
}

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];}
}


//randomly alternating header images
var altimage = new Array() // do not change this

altimage[0] = 'main_img1.jpg'
altimage[1] = 'main_img2.jpg'
altimage[2] = 'main_img3.jpg'
//altimage[3] = 'hdrimg4.jpg'

var j = 0
var p = altimage.length;

var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = altimage[i]
}

var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write('<img alt="" width=389 height=215 src="images/'+altimage[whichImage]+'">');
}


function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=480,height=360,left = 600,top = 345');");
}


//-->



