getHref

get_href.js

var urlencode = function(str) {
        return encodeURIComponent(str)
            .replace(/\(/g, '%28')
            .replace(/\)/g, '%29')
            .replace(/!/g, '%21')
            .replace(/\*/g, '%2A')
            .replace(/~/g, '%7E');
    },
getHref = function() {
    var href = '';

    try {
        href = window.top.location.href;
    } catch (e) {
        if (window.parent) {
            try {
                href = window.parent.location.href;
            } catch (e2) {
                href = '';
            }
        }
    }

    if (href === '') {
        href = window.location.href;
    }

    if (href === '') {
        href = document.location.href;
    }

    return urlencode(href);
}