var temp = document.location.href.split('/');
var currpage = '';
currpage = 'DEFAULT.ASPX';

if (temp.length > 0 && temp[temp.length - 1].length > 0)
{
    currpage = temp[temp.length-1];
}

function imgThumbnailMouseOver(shade, bright, viewer, viewersrc) {

    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
        document.getElementById(shade).filters.alpha.opacity = 50;
        document.getElementById(bright).filters.alpha.opacity = 100;
        document.getElementById(viewer).src = viewersrc;
    }
    else {
        document.getElementById(shade).style.opacity = .5;
        document.getElementById(bright).style.opacity = 1;
        document.getElementById(viewer).src = viewersrc;
    }
}

function imgThumbnailMouseOut(shade) {

    if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
        document.getElementById(shade).filters.alpha.opacity = 50;
    }
    else {
        document.getElementById(shade).style.opacity = .5;
    }
}