/*email link*/
u = window.location;

/*default email subject text if desired*/
function emaillink() {
	window.location = "mailto:?subject="+escape(document.title)+"&body=I thought you might find this link interesting: "+escape(u);
}
   
/*resize text*/
var prefsLoaded = false;
var defaultFontSize = 80;
var currentFontSize = defaultFontSize;

function revertStyles(){

	currentFontSize = defaultFontSize;
	changeFontSize(0);

}

function changeFontSize(sizeDifference){
	currentFontSize = parseInt(currentFontSize) + parseInt(sizeDifference * 5);

	if(currentFontSize > 100){
		currentFontSize = 100;
	}else if(currentFontSize < 60){
		currentFontSize = 60;
	}

	setFontSize(currentFontSize);
};

function setFontSize(fontSize){
	var stObj = (document.getElementById) ? document.getElementById('wrapper') : document.all('wrapper');
	document.body.style.fontSize = fontSize + '%';
};

/* - - - - - -
OTHER FUNCTIONS
- - - - - - */

function switchhook() {
	var thelink = document.getElementById("ouhook").href;
	var lnks = document.links;
	for (var i=0;i<lnks.length;i++) {
		if (lnks[i].id == "copylink") {
			lnks[i].href = thelink;
			break;
		}
	}
}


function init () {
	switchhook();
}

function nostatus () {
	window.status="";
	return true;
}

/* ----------------
Rotating Image 
------------------*/

var imgs = new Array(); 
var links = new Array();
var imgcnt = 0; 
var thisimg = 0;

links[imgcnt] = 'http://nsit.uchicago.edu/emailscams';
imgs[imgcnt++] = 'http://nsit.uchicago.edu/img/home-rotating/readbtwline.jpg';

links[imgcnt] = 'http://nsit.uchicago.edu/safecomputing';
imgs[imgcnt++] = 'http://nsit.uchicago.edu/img/home-rotating/trojan-horse_thumb.jpg';

links[imgcnt] = 'http://nsit.uchicago.edu/announcements/archive/2008/10/passwords.shtml';
imgs[imgcnt++] = 'http://nsit.uchicago.edu/img/home-rotating/passwordsafe2.jpg';

links[imgcnt] = 'http://nsit.uchicago.edu/announcements/archive/2007/11/websharetip.shtml';
imgs[imgcnt++] = 'http://nsit.uchicago.edu/posters/img/webshare-ticket.jpg';

links[imgcnt] = 'http://nsit.uchicago.edu/announcements/archive/2008/10/software.shtml';
imgs[imgcnt++] = 'http://nsit.uchicago.edu/img/home-rotating/discountedorfreens.jpg';

links[imgcnt] = 'http://nsit.uchicago.edu/announcements/archive/2009/04/topten.shtml';
imgs[imgcnt++] = 'http://nsit.uchicago.edu/img/home-rotating/discoverthumb.jpg';



function rotate() {
if (document.getElementById("rollimg")!=null){
thisimg++;
if (thisimg >= imgcnt) thisimg = 0;
document.getElementById("rollimg").src = imgs[thisimg];
setTimeout("rotate();",3000);
}
}
setTimeout("rotate();",3000); 

/* BANNER IMAGE */
function banner(){
var picNum = Math.random();
picNum = Math.round((4*picNum)+.5);
picUrl= 'http://nsit.uchicago.edu/img/home-image' + picNum +'.jpg';
document.getElementById("banner").style.backgroundImage='url(\''+picUrl +'\')';
}

/* ----------------
Safe Computing Image 
------------------*/
var scimgs = new Array(); 
var sclinks = new Array();
var scimgcnt = 0; 
var scthisimg = 0;

sclinks[scimgcnt] = 'http://nsit.uchicago.edu/services/safecomputing/updates/';
scimgs[scimgcnt++] = 'http://nsit.uchicago.edu/img/safecomputing/patchthumb.jpg';

sclinks[scimgcnt] = 'http://nsit.uchicago.edu/services/safecomputing/tmi/';
scimgs[scimgcnt++] = 'http://nsit.uchicago.edu/img/safecomputing/tmithumb.jpg';

sclinks[scimgcnt] = 'http://nsit.uchicago.edu/services/safecomputing/phishing/';
scimgs[scimgcnt++] = 'http://nsit.uchicago.edu/img/safecomputing/phishthumb.jpg';

sclinks[scimgcnt] = 'http://nsit.uchicago.edu/services/safecomputing/passwords/';
scimgs[scimgcnt++] = 'http://nsit.uchicago.edu/img/safecomputing/passwordthumb.jpg';

sclinks[scimgcnt] = 'http://nsit.uchicago.edu/services/safecomputing/browser/';
scimgs[scimgcnt++] = 'http://nsit.uchicago.edu/img/safecomputing/browserthumb.jpg'; 

sclinks[scimgcnt] = 'http://nsit.uchicago.edu/services/safecomputing/wireless/';
scimgs[scimgcnt++] = 'http://nsit.uchicago.edu/img/safecomputing/wirelessthumb.jpg'; 

sclinks[scimgcnt] = 'http://nsit.uchicago.edu/services/safecomputing/phishing/';
scimgs[scimgcnt++] = 'http://nsit.uchicago.edu/img/safecomputing/phish08thumb.jpg';

function scrotate() {
if (document.getElementById("scrollimg")!=null){
scthisimg++;
if (scthisimg >= scimgcnt) scthisimg = 0;
document.getElementById("scrollimg").src = scimgs[scthisimg];
setTimeout("scrotate();",3000);
}
}
setTimeout("scrotate();",3000);