// browser supports DOM?
var isDOM = document.getElementById ? true : false;

// font stuff
var font_size = 100;
var font_MAX  = 130;
var font_MIN  = 70;
var zoomAmount = 50;

function setCookie(name, value)
{
	var expires = new Date()
	expires = expires.setDate(expires.getDate() + 45);
	expires = new Date(expires);
	var cookiestr = name + "=" + value + ";EXPIRES=" + expires;
	document.cookie = cookiestr;
}

function adjust_text(num, setcookie)
{
     font_size += (num * 5);

     if (font_size > font_MAX)
     {
	  font_size = font_MAX;
     }
     else if (font_size < font_MIN)
     {
	  font_size = font_MIN;
     }


//     document.getElementsByTagName("body")[0].style.fontSize = font_size + "px";
     document.getElementsByTagName("body")[0].style.fontSize = font_size + "%";

	if (setcookie)
	{
     	setCookie("font_size", font_size);
    }
}

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];}
}

function showDiv(divid)
{
	var obj = document.getElementById(divid);
	obj.style.visibility = 'visible';
	obj.style.position = 'relative';
}

function hideDiv(divid)
{
	var obj = document.getElementById(divid);
	obj.style.visibility = 'hidden';
	obj.style.position = 'absolute';
}

var preloadFlag = false;
function preloadMapImages() {
	if (document.images) {
		wesnmap_01_CherryHill_over = newImage("../../images/wesn/map/wesnmap_01-CherryHill_over.gif");
		wesnmap_01_SouthPhiladelphia_over = newImage("../../images/wesn/map/wesnmap_01-SouthPhiladelphi.gif");
		wesnmap_01_Wilmington_over = newImage("../../images/wesn/map/wesnmap_01-Wilmington_over.gif");
		wesnmap_01_NorthBrunswick_over = newImage("../../images/wesn/map/wesnmap_01-NorthBrunswick_o.gif");
		wesnmap_01_CenterCityPhiladelphia_over = newImage("../../images/wesn/map/wesnmap_01-CenterCityPhilad.gif");
		wesnmap_01_NortheastPhiladelphia_over = newImage("../../images/wesn/map/wesnmap_01-NortheastPhilade.gif");
		wesnmap_01_BucksCounty_over = newImage("../../images/wesn/map/wesnmap_01-BucksCounty_over.gif");
		wesnmap_01_PlymouthMeeting_over = newImage("../../images/wesn/map/wesnmap_01-PlymouthMeeting_.gif");
		wesnmap_01_NEPA_over = newImage("../../images/wesn/map/wesnmap_01-NEPA_over.gif");
		wesnmap_01_SomersPoint_over = newImage("../../images/wesn/map/wesnmap_01-SomersPoint_over.gif");
		preloadFlag = true;
	}
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}