// Image Preloader  v1.0.1
// documentation: http://www.dithered.com/javascript/image_preloader/index.html
// license: http://creativecommons.org/licenses/by/1.0/
// code by Chris Nott (chris[at]dithered[dot]com)


function preloadImages() {
   if (document.images) {
      for (var i = 0; i < preloadImages.arguments.length; i++) {
         (new Image()).src = preloadImages.arguments[i];
      }
   }
}

// Rollover  v2.0.1
// documentation: http://www.dithered.com/javascript/rollover/index.html
// license: http://creativecommons.org/licenses/by/1.0/
// code by Chris Nott (chris[at]dithered[dot]com)


function isDefined(property) {
  return (typeof property != 'undefined');
}

var rolloverInitialized = false;
function rolloverInit() {
   if (!rolloverInitialized && isDefined(document.images)) {
      
      // get all images (including all <input type="image">s)
      // use getElementsByTagName() if supported
      var temp_images = new Array();	  
	  var img_inputs = new Array();
      if (isDefined(document.getElementsByTagName)) {
         temp_images = document.getElementsByTagName('img');
         var inputs = document.getElementsByTagName('input');
         for (var i = 0; i < inputs.length; i++) {
            if (inputs[i].type == 'image') {
               img_inputs.push(inputs[i]);
            }
         }
      }
      
	  var images = new Array();
	  for (var i in temp_images) {
		  images.push(temp_images[i]);
	  }
	  for (var i in img_inputs) {
		  images.push(img_inputs[i]);
	  }
	  
            
      // get all images with '_off.' in src value
      for (var i = 0; i < images.length; i++) {
		 img_src = new String(images[i].src);
         if (img_src.indexOf('_off.') != -1) {
            var image = images[i];
            
            // store the off state filename in a property of the image object
            image.offImage = new Image();
            image.offImage.src = image.src;
            
            // store the on state filename in a property of the image object
            // (also preloads the on state image)
            image.onImage = new Image();
            image.onImage.imageElement = image;
            
            // add onmouseover and onmouseout event handlers once the on state image has loaded
            // Safari's onload is screwed up for off-screen images; temporary fix
            if (navigator.userAgent.toLowerCase().indexOf('safari') != - 1) {
               image.onmouseover = function() {
                  this.src = this.onImage.src;
               };
               image.onmouseout = function() {
                  this.src = this.offImage.src;
               };
            }
            else {
               image.onImage.onload = function() {
                  this.imageElement.onmouseover = function() {
                     this.src = this.onImage.src;
                  };
                  this.imageElement.onmouseout = function() {
                     this.src = this.offImage.src;
                  };
               };
            }
			
            
            // set src of on state image after defining onload event handler
            // so cached images (that load instantly in IE) will trigger onload
            image.onImage.src = image.src.replace(/_off\./, '_on.');
         }
      }
   }
   rolloverInitialized = true;
}

// call rolloverInit when document finishes loading
if (isDefined(window.addEventListener)) {
   window.addEventListener('load', rolloverInit, false);
}
else if (isDefined(window.attachEvent)) {
   window.attachEvent('onload', rolloverInit);
}


/***********************************************
* Cool DHTML tooltip script II- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/

var offsetfromcursorX=-320 //Customize x offset of tooltip
var offsetfromcursorY=15 //Customize y offset of tooltip

var offsetdivfrompointerX=0 //Customize x offset of tooltip DIV relative to pointer image
var offsetdivfrompointerY=0 //Customize y offset of tooltip DIV relative to pointer image. Tip: Set it to (height_of_pointer_image-1).

document.write('<div id="hoverpop" class="wide"></div>') //write out tooltip DIV
document.write('<img id="pointer" src="" width="0" height="0">') //write out pointer image

var ie=document.all
var ns6=document.getElementById && !document.all
var enabletip=false
if (ie||ns6)
var tipobj=document.all? document.all["hoverpop"] : document.getElementById? document.getElementById("hoverpop") : ""

var pointerobj=document.all? document.all["pointer"] : document.getElementById? document.getElementById("pointer") : ""

function ietruebody(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function ddrivetip(showpic,imagename,name,title){
if (ns6||ie){
if (typeof thewidth!="undefined") tipobj.style.width=thewidth+"px"
if (typeof thecolor!="undefined" && thecolor!="") tipobj.style.backgroundColor=thecolor
if (showpic > 0){
	newHTML = '<p class="centered"><img src="https://mylaw.usc.edu/assets/images/shared/cvv.gif" width="214" height="125" alt="Creditcard Verification Value" class="noborder" />';
} else { 
	if (showpic < 0){
	newHTML = '';
	} else {
	newHTML = '<img src="http://weblaw.usc.edu/faculty/assets/images/headshots/placeholder.gif" width="176" height="250" alt="No Image on File" />';
	}
}

if (typeof name!="undefined" && name!="") newHTML = newHTML + '<h1>' + name + '</h1>';
if (typeof title!="undefined" && title!="") newHTML = newHTML + '<p>' + title + '</p>';
tipobj.innerHTML=newHTML
enabletip=true
return false
}
}

function positiontip(e){
if (enabletip){
var nondefaultpos=false
var curX=(ns6)?e.pageX : event.clientX+ietruebody().scrollLeft;
var curY=(ns6)?e.pageY : event.clientY+ietruebody().scrollTop;
//Find out how close the mouse is to the corner of the window
var winwidth=ie&&!window.opera? ietruebody().clientWidth : window.innerWidth-20
var winheight=ie&&!window.opera? ietruebody().clientHeight : window.innerHeight-20

var rightedge=ie&&!window.opera? winwidth-event.clientX-offsetfromcursorX : winwidth-e.clientX-offsetfromcursorX
var bottomedge=ie&&!window.opera? winheight-event.clientY-offsetfromcursorY : winheight-e.clientY-offsetfromcursorY

var leftedge=(offsetfromcursorX<0)? offsetfromcursorX*(-1) : -1000

//if the horizontal distance isn't enough to accomodate the width of the context menu
if (rightedge<tipobj.offsetWidth){
//move the horizontal position of the menu to the left by it's width
tipobj.style.left=curX-tipobj.offsetWidth+"px"
nondefaultpos=true
}
else if (curX<leftedge)
tipobj.style.left="5px"
else{
//position the horizontal position of the menu where the mouse is positioned
tipobj.style.left=curX+offsetfromcursorX-offsetdivfrompointerX+"px"
pointerobj.style.left=curX+offsetfromcursorX+"px"
}

//same concept with the vertical position
if (bottomedge<tipobj.offsetHeight){
tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+"px"
nondefaultpos=true
}
else{
tipobj.style.top=curY+offsetfromcursorY+offsetdivfrompointerY+"px"
pointerobj.style.top=curY+offsetfromcursorY+"px"
}
tipobj.style.visibility="visible"
if (!nondefaultpos)
pointerobj.style.visibility="hidden"
else
pointerobj.style.visibility="hidden"
}
}

function hideddrivetip(){
if (ns6||ie){
enabletip=false
tipobj.style.visibility="hidden"
pointerobj.style.visibility="hidden"
tipobj.style.left="-1000px"
tipobj.style.backgroundColor=''
tipobj.style.width=''
}
}

document.onmousemove=positiontip