/*
PopUpBox JS: Image Trailer
by Lokesh Dhakar - http://www.huddletogether.com
For more information on this script, visit:
http://huddletogether.com/projects/lightbox/
Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
(basically, do anything you want, just leave my name and link)
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Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
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Usage:
- Add the attribute "imglnk" containing your popup image path.
- Add the attribute "rel" containing the value "popupbox".
- Use the title attribute for the popup text display.
Example:
- Add the script tag right after the body tag.
Example:
- Add the following to the pages onload function
Example:
initPopUpBox();
Table of Contents
-----------------
Configuration
Functions
- getPageScroll()
- getPageSize()
- pause()
- showPopUpBox()
- hidePopUpBox()
- initPopUpBox()
*/
//
// Configuration
//
var offsetfrommouse=[15,15]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.
var currentimageheight = 300; // maximum image size.
var displaytime =5000; //time to display popup.
var timer;
//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){
var yScroll;
if (self.pageYOffset) {
yScroll = self.pageYOffset;
} else if (document.documentElement && document.documentElement.scrollTop){ // Explorer 6 Strict
yScroll = document.documentElement.scrollTop;
} else if (document.body) {// all other Explorers
yScroll = document.body.scrollTop;
}
arrayPageScroll = new Array('',yScroll)
return arrayPageScroll;
}
//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
var xScroll, yScroll;
if (window.innerHeight && window.scrollMaxY) {
xScroll = document.body.scrollWidth;
yScroll = window.innerHeight + window.scrollMaxY;
} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
xScroll = document.body.scrollWidth;
yScroll = document.body.scrollHeight;
} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
xScroll = document.body.offsetWidth;
yScroll = document.body.offsetHeight;
}
var windowWidth, windowHeight;
if (self.innerHeight) { // all except Explorer
windowWidth = self.innerWidth;
windowHeight = self.innerHeight;
} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
windowWidth = document.documentElement.clientWidth;
windowHeight = document.documentElement.clientHeight;
} else if (document.body) { // other Explorers
windowWidth = document.body.clientWidth;
windowHeight = document.body.clientHeight;
}
// for small pages with total height less then height of the viewport
if(yScroll < windowHeight){
pageHeight = windowHeight;
} else {
pageHeight = yScroll;
}
// for small pages with total width less then width of the viewport
if(xScroll < windowWidth){
pageWidth = windowWidth;
} else {
pageWidth = xScroll;
}
arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
return arrayPageSize;
}
//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
var now = new Date();
var exitTime = now.getTime() + numberMillis;
while (true) {
now = new Date();
if (now.getTime() > exitTime)
return;
}
}
//
// showPopUpBox()
// Preloads images. Pleaces new image in lightbox then centers and displays.
//
function showPopUpBox(objLink)
{
// prep objects
var objPopUpBox = document.getElementById('popupbox');
var objImage = document.getElementById('popupboxImage');
var objCaption = document.getElementById('caption');
var arrayPageSize = getPageSize();
var arrayPageScroll = getPageScroll();
// preload image
imgPreload = new Image();
imgPreload.onload=function(){
objImage.src = objLink.getAttribute("imglnk");
// center popupbox and make sure that the top and left values are not negative
// and the image placed outside the viewport
//var popupboxTop = arrayPageScroll[1] + ((arrayPageSize[3] - 35 - imgPreload.height) / 2);
//var popupboxLeft = ((arrayPageSize[0] - 20 - imgPreload.width) / 2);
//objPopUpBox.style.top = (popupboxTop < 0) ? "0px" : popupboxTop + "px";
//objPopUpBox.style.left = (popupboxLeft < 0) ? "0px" : popupboxLeft + "px";
if(objLink.getAttribute('title')){
objCaption.style.display = 'block';
//objCaption.style.width = imgPreload.width + 'px';
objCaption.innerHTML = objLink.getAttribute('title');
} else {
objCaption.style.display = 'none';
}
// A small pause between the image loading and displaying is required with IE,
// this prevents the previous image displaying for a short burst causing flicker.
if (navigator.appVersion.indexOf("MSIE")!=-1){
pause(250);
}
objPopUpBox.style.display = 'block';
// After image is loaded, update the overlay height as the new image might have
// increased the overall page height.
arrayPageSize = getPageSize();
return false;
}
timer = setTimeout('hidePopUpBox()', displaytime);
currentimageheight = objImage.height + 25;
document.onmousemove=followmouse;
imgPreload.src = objLink.getAttribute("imglnk");
}
//
// hidePopUpBox()
//
function hidePopUpBox()
{
// get objects
objPopUpBox = document.getElementById('popupbox');
// hide popupbox and overlay
objPopUpBox.style.display = 'none';
document.onmousemove='';
clearTimeout(timer);
timer="";
}
//
// initPopUpBox()
// Function runs on window load, going through link tags looking for rel="lightbox".
// These links receive onclick events that enable the lightbox display for their targets.
// The function also inserts html markup at the top of the page which will be used as a
// container for the overlay pattern and the inline image.
//
function initPopUpBox()
{
if (!document.getElementsByTagName){ alert("problems"); return; }
var getImages = document.getElementsByTagName('img');
// loop through all image tags
var imgCnt = getImages.length;
for (var i=0; i