function MM_preloadImages() { //v3.0
    var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
    var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
    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=MM_findObj(n,d.layers[i].document);
    if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
    var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
    if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

if ((typeof(window.__wisObject) == "undefined") || (window.__wisObject == null))
{
    window.__wisObject = new Object();
    // altImageName is relative to image.src; usually could specify just name without path
    window.__wisObject.alterImageButton = function(image, altImageName)
    {
        if ((typeof(image.src) != "undefined") && (image.src != null))
        {
            image.original_src = image.src;
            
            var pos = image.src.lastIndexOf("/");
            if (pos >= 0)
            {
                var path = image.src.substring(0, pos);
                if (altImageName != null)
                {
                    image.src = path + "/" + altImageName;
                }
            }
            else if (altImageName != null)
                image.src = altImageName;
        }
    }
    window.__wisObject.restoreImageButton = function(image)
    {
        if ((typeof(image.src) != "undefined") && (image.src != null))
        {
            if ((typeof(image.original_src) != "undefined") && (image.original_src != null))
            {
                image.src = image.original_src;
            }
        }    
    }
}