/*

            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;}}

}