// not sure what this does 
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

// preload images for the rollovers 
var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		home_over = newImage("images/home-over.gif");
		aboutus_over = newImage("images/aboutus-over.gif");
		contactus_over = newImage("images/contactus-over.gif");
		requestinterview_over = newImage("images/requestinterview-over.gif");
		preloadFlag = true;
	}
}

// soopa image rollovers from youngpup.net
function soopaSetup() {
	var img, sh, sn, sd
	for (var i = 0; (img = document.images[i]); i++) {
		if (img.getAttribute) {

			sn = img.getAttribute("src");
			sh = img.getAttribute("hsrc");
			sd = img.getAttribute("dsrc");

			if (sn != "" && sn != null) {
				img.n = new Image();
				img.n.src = img.src;
			
				if (sh != "" && sh != null) {
					img.h = new Image();
					img.h.src = sh;
					img.onmouseover = soopaSwapOn
					img.onmouseout  = soopaSwapOff
				}

				if (sd != "" && sd != null) {
					img.d = new Image();
					img.d.src = sd;
					img.onmousedown = soopaSwapDown
				}
			}
		}
	}
}

function soopaSwapOn() {
	this.src = this.h.src;
}

function soopaSwapOff() {
	this.src  = this.n.src;
}

function soopaSwapDown() {
	this.src  = this.d.src;
	this.temp = typeof(document.onmouseup) != 'undefined' && typeof(document.onmouseup) != 'unknown' ? document.onmouseup : "";
	soopaSwapUp.img = this;
	document.onmouseup = soopaSwapUp;
}

function soopaSwapUp() {
	var ths = soopaSwapUp.img;
	ths.src = ths.n.src;
	if (ths.temp) document.onmouseup = ths.temp;
}

// QueryString
// The script breaks the query string into multiple key/value pairs and provides access to the 
// values through the QueryString function. 
//
function QueryString(key)
{
	var value = null;
	for (var i=0;i<QueryString.keys.length;i++)
	{
		if (QueryString.keys[i]==key)
		{
			value = QueryString.values[i];
			break;
		}
	}
	return value;
}
QueryString.keys = new Array();
QueryString.values = new Array();

function QueryString_Parse()
{
	var query = window.location.search.substring(1);
	var pairs = query.split("&");
	
	for (var i=0;i<pairs.length;i++)
	{
		var pos = pairs[i].indexOf('=');
		if (pos >= 0)
		{
			var argname = pairs[i].substring(0,pos);
			var value = pairs[i].substring(pos+1);
			QueryString.keys[QueryString.keys.length] = argname;
			QueryString.values[QueryString.values.length] = value;		
		}
	}

}

QueryString_Parse();


function readID() {
var expDays = 365; // number of days the cookie should last
var expDate = new Date();
expDate.setTime(expDate.getTime() +  (24 * 60 * 60 * 1000 * expDays)); 
var id = GetCookie('id');
if (id == null || id == "no id") {
if (location.search.length > 1) id = location.search.substring(1, location.search.length);
else id = "no id";
if (id != GetCookie('id')) SetCookie('id', id, expDate);
}

// create a variable called id which holds the referrer_url data 
var id = QueryString("ref");

}
function getCookieVal (offset) {  
var endstr = document.cookie.indexOf (";", offset);  
if (endstr == -1)    
endstr = document.cookie.length;  
return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie (name) {  
var arg = name + "=";  
var alen = arg.length;  
var clen = document.cookie.length;  
var i = 0;  
while (i < clen) {    
var j = i + alen;    
if (document.cookie.substring(i, j) == arg)      
return getCookieVal (j);    
i = document.cookie.indexOf(" ", i) + 1;    
if (i == 0) break;   
}  
return null;
}
function SetCookie (name, value) {  
var argv = SetCookie.arguments;  
var argc = SetCookie.arguments.length;  
var expires = (argc > 2) ? argv[2] : null;  
var path = (argc > 3) ? argv[3] : null;  
var domain = (argc > 4) ? argv[4] : null;  
var secure = (argc > 5) ? argv[5] : false;  
document.cookie = name + "=" + escape (value) + 
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
((path == null) ? "" : ("; path=" + path)) +  
((domain == null) ? "" : ("; domain=" + domain)) +    
((secure == true) ? "; secure" : "");
}