// @version $Revision: 1.2 $ $Date: 2005/03/04 14:57:08 $ $Author: bill $
// 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 s)
// use getElementsByTagName() if supported
var images = new Array();
if (isDefined(document.getElementsByTagName)) {
images = document.getElementsByTagName('img');
var inputs = document.getElementsByTagName('input');
for (var i = 0; i < inputs.length; i++) {
if (inputs[i].type == 'image') {
images[images.length] = inputs[i];
}
}
}
// otherwise, use document.images and document.forms collections
// remove if not supporting IE4, Opera 4-5
else {
images = document.images;
inputs = new Array();
for (var formIndex = 0; formIndex < document.forms.length; formIndex++) {
for (var elementIndex = 0; elementIndex < document.forms.elements.length; elementIndex++) {
if (isDefined(document.forms.elements[i].src)) {
inputs[inputs.length] = document.forms.elements[i];
}
}
}
}
// get all images with '_off.' in src value
for (var i = 0; i < images.length; i++) {
if (images[i].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);
}
document.write('