var handleEnterKey = function(e, btnId) {
    if (window.event) {
        keynum = e.keyCode
    }
    else if (e.which) {
        keynum = e.which
    }
    if (keynum == 13) {
        var obj = document.getElementById(btnId);
        if (obj) {
            try { e.returnValue = false; }
            catch (err) { }
            try { e.cancel = true; }
            catch (err) { }
            obj.click();
        }
    }
}

/* corrects PNG images to get PNG transparency to work in IE */
var correctPNG = function() {
    var arVersion = navigator.appVersion.split("MSIE")
    var version = parseFloat(arVersion[1])

    if ((version >= 5.5) && (document.body.filters)) {
        for (var i = 0; i < document.images.length; i++) {
            var img = document.images[i]
            var imgName = img.src.toUpperCase()
            if (imgName.substring(imgName.length - 3, imgName.length) == "PNG") {
                var imgID = (img.id) ? "id='" + img.id + "' " : ""
                var imgClass = (img.className) ? "class='" + img.className + "' " : ""
                var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
                var imgStyle = "display:inline-block;" + img.style.cssText
                if (img.align == "left") imgStyle = "float:left;" + imgStyle
                if (img.align == "right") imgStyle = "float:right;" + imgStyle
                if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
                var strNewHTML = "<span " + imgID + imgClass + imgTitle
             + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
             + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
             + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
                img.outerHTML = strNewHTML
                i = i - 1
            }
        }
    }
};