rolls = new Array(); numRolls=0;

function PPFindObj(n, d)
{
    var p,i,x;
    if( !d ) d=document; 
    if( (p=n.indexOf("?"))>0&&parent.frames.length )
    {
        d=parent.frames[n.substring(p+1)].document; 
        n=n.substring(0,p);
    }
    if( !(x=d[n])&&d.all ) x=d.all[n]; 
    for( i=0;!x&&i<d.forms.length;i++ ) x=d.forms[i][n];
    for( i=0;!x&&d.layers&&i<d.layers.length;i++ ) x=PPFindObj(n,d.layers[i].document); 
    return x;
}

function PPImgFind(name)
{
    if (document.images)
        for(var i=0;i<numRolls;i++) if( name == rolls[i].name ) return rolls[i];
    return null;
}

function PPImgAction( action, name, roll )
{
    if( !roll ) roll = PPImgFind(name);
    var obj = PPFindObj(name);
    if (roll && obj)
    {
        if( action == 'over' )
            obj.src = roll.down ? roll.imgDownOver.src : roll.imgOver.src;
        else if( action == 'out' )
            obj.src = roll.down ? roll.imgDown.src : roll.imgNormal.src;
        else if( action == 'down')
        {
            roll.down = true;
            PPImgAction('over',name,roll);
            if( roll.radio )
                for( var i=0;i<numRolls;i++ )
                    if( rolls[i].radio && rolls[i].name != name )
                    {
                        rolls[i].down=false;
                        PPImgAction('out',rolls[i].name,rolls[i]);
                    }    
        }
    }
}

function PPImg( name,normal,over,down,downover,initDown,radio ) 
{
    this.name = name;
    this.imgNormal = new Image(); this.imgNormal.src  = normal; 
    this.imgOver = new Image(); this.imgOver.src  = over; 
    this.imgDown = new Image(); this.imgDown.src  = down; 
    this.imgDownOver = new Image(); this.imgDownOver.src = downover; 
    this.down = initDown; this.over = false; this.radio = radio;
}

function PPImgInit( name,normal,over,down,downover,initDown,radio ) 
{
    if (document.images) 
        rolls[numRolls++] = new PPImg(name,normal,over,down,downover,initDown,radio);
}