/*
JAVASCRIPT LIBRARY FILE: preload and rollover effects
All material herein (c) Copyright 2003 Binary Minds, Inc.
All Rights Reserved.
**Document Under Development**
Current Administrator: Tom
Changes (incl. date and name)
6/29/03 Tom: created
7/25/03 Tom: removed possibility of sending source of the over image.
Required Parameters:
FUNCTION: imgPreload
1. Associative Array of preload images.
key - image name
value - image source
FUNCTION imgMouseOver
1: (String) Name of the image being replaced
2: (String) Name of the replacing image OR (String) Source of the replacing image.
If imgPreload is not used, second parameter must be set to image source.
FUNCTION imgMouseOut
1:(String) Name of the image being replaced
Optional Parameters: NONE
Usage:
------To preload images:------
Create an array with a key being a name of an image and value set to it's source. Array name is unimportant. Body tag onLoad must
contain a call to imgPreload(arrayName) function.
i.e:
Preload Example
------MouseOver effect:------
Example1: Second parameter of the imgMouseOver function is a NAME of the mouseover image
Example2: Second parameter of the imgMouseOver function is a SOURCE of the mouseover image
*/
var preLoadArr = new Array();
var sSwappedSrc = new Array();
var err=0;
function imgPreload(arr){
if (document.images){
for (var i in arr){
preLoadArr[i] = new Image;
preLoadArr[i].src = arr[i];
}
}
}
function imgMouseOver(sourceImgName,swapImg){ //argument1: name of the image1, argument2: name of the image2 or it's source
if(document.images && preLoadArr[swapImg] != null){
sSwappedSrc[sourceImgName] = document.images[sourceImgName].src;
document.images[sourceImgName].src = preLoadArr[swapImg].src;
}
}
function imgMouseOut(sourceImgName){
if(document.images[sourceImgName] != null && sSwappedSrc[sourceImgName] != null){
document.images[sourceImgName].src = sSwappedSrc[sourceImgName];
}
}