/*
Header Information------------------------------------[Do Not Remove This Header]--
Title: OO Dom Image Rollover
Description: This script makes it easy to add rollover/ mousedown
effects to any image on the page, including image submit buttons. Automatically
preloads images as well. Script works in all DOM capable browsers- IE5+, NS6+,
Opera7+.

Legal: Copyright 2005 Adam Smith
Author Email Address: ibulwark@hotmail.com
Date Created: June 6, 2005
Website: Codevendor.com | eBadgeman.com
Script featured on Dynamic Drive: http://www.dynamicdrive.com
-----------------------------------------------------------------------------------
*/

function imageholderclass(){
this.over=new Array();
this.down=new Array();
this.src=new Array();
this.store=store;

function store(src, down, over){
var AL=this.src.length;
this.src[AL]=new Image(); this.src[AL].src=src;
this.over[AL]=new Image(); this.over[AL].src=over;
this.down[AL]=new Image(); this.down[AL].src=down;
}
}

var ih = new imageholderclass();
var mouseisdown=0;

function preloader(t){
for(i=0;i<t.length;i++){
if(t[i].getAttribute('srcover')||t[i].getAttribute('srcdown')){

storeimages(t[i]);
var checker='';
checker=(t[i].getAttribute('srcover'))?checker+'A':checker+'';
checker=(t[i].getAttribute('srcdown'))?checker+'B':checker+'';

switch(checker){
case 'A' : mouseover(t[i]);mouseout(t[i]); break;
case 'B' : mousedown(t[i]); mouseup2(t[i]); break;
case 'AB' : mouseover(t[i]);mouseout(t[i]); mousedown(t[i]); mouseup(t[i]); break;
default : return;
}

if(t[i].src){t[i].setAttribute("oldsrc",t[i].src);}
}
}
}
function mouseup(t){
var newmouseup;
if(t.onmouseup){
t.oldmouseup=t.onmouseup;
newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("srcover");this.oldmouseup();}

}
else{newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("srcover");}}
t.onmouseup=newmouseup;
}

function mouseup2(t){
var newmouseup;
if(t.onmouseup){
t.oldmouseup=t.onmouseup;
newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("oldsrc");this.oldmouseup();}
}
else{newmouseup=function(){mouseisdown=0;this.src=this.getAttribute("oldsrc");}}
t.onmouseup = newmouseup;
}

function mousedown(t){
var newmousedown;
if(t.onmousedown){
t.oldmousedown=t.onmousedown;
newmousedown=function(){if(mouseisdown==0){this.src=this.getAttribute("srcdown");this.oldmousedown();}}
}
else{newmousedown=function(){if(mouseisdown==0){this.src=this.getAttribute("srcdown");}}}
t.onmousedown=newmousedown;
}

function mouseover(t){
var newmouseover;
if(t.onmouseover){
t.oldmouseover=t.onmouseover;
newmouseover=function(){this.src=this.getAttribute("srcover");this.oldmouseover();}
}
else{newmouseover=function(){this.src=this.getAttribute("srcover");}}
t.onmouseover=newmouseover;
}

function mouseout(t){
var newmouseout;
if(t.onmouseout){
t.oldmouseout=t.onmouseout;
newmouseout=function(){this.src=this.getAttribute("oldsrc");this.oldmouseout();}
}
else{newmouseout=function(){this.src=this.getAttribute("oldsrc");}}
t.onmouseout=newmouseout;
}

function storeimages(t){
var s=(t.getAttribute('src'))?t.getAttribute('src'):'';
var d=(t.getAttribute('srcdown'))?t.getAttribute('srcdown'):'';
var o=(t.getAttribute('srcover'))?t.getAttribute('srcover'):'';
ih.store(s,d,o);
}

function preloadimgsrc(){
if(!document.getElementById) return;
var it=document.getElementsByTagName('IMG');
var it2=document.getElementsByTagName('INPUT');
preloader(it);
preloader(it2);
}

if(window.addEventListener){window.addEventListener("load", preloadimgsrc, false);}
else{
if(window.attachEvent){window.attachEvent("onload", preloadimgsrc);}
else{if(document.getElementById){window.onload=preloadimgsrc;}}
}