var ieDOM = false, nsDOM = false;
    var stdDOM = document.getElementById; 

    function initMethod() {
        //Determine the browser support for the DOM
        if( !stdDOM ) {
            ieDOM = document.all;
            if( !ieDOM ) {
                nsDOM = ((navigator.appName.indexOf('Netscape') != -1) && (parseInt(navigator.appVersion) ==4));
            }
        }
        passwordChanged();
    }

    function getObject(objectId) {
        if (stdDOM) return document.getElementById(objectId);
        if (ieDOM) return document.all[objectId];
        if (nsDOM) return document.layers[objectId];
    }

    function getObjectStyle(objectId) {
        if (nsDOM) return getObject(objectId);
        var obj = getObject(objectId);
        return obj.style;
    }

    function showDefault(objectId) {
        showCell(objectId, "#E2E2E2", "#E2E2E2");
    }
 
    function showCell(objectId, foreColor, backColor) {
        getObjectStyle(objectId).color = foreColor;
        getObjectStyle(objectId).backgroundColor = backColor;
    }

    function showWeak() {
        showCell("pwWeak", "Black", "#FF6666");
        showDefault("pwMedium");
        showDefault("pwStrong");
    }

    function showMedium() {
        showCell("pwWeak", "#FFCC66", "#FFCC66");
        showCell("pwMedium", "Black", "#FFCC66");
        showDefault("pwStrong");
    }

    function showStrong() {
        showCell("pwWeak", "#80FF80", "#80FF80");
        showCell("pwMedium", "#80FF80", "#80FF80");
        showCell("pwStrong", "Black", "#80FF80");
    }

    function showUndetermined() {
        showDefault("pwWeak");
        showDefault("pwMedium");
        showDefault("pwStrong");
    }
    
    function passwordChanged(pwd) {
        var strongRegex = new RegExp("^(?=.{8,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*\\W).*$", "g");
        var mediumRegex = new RegExp("^(?=.{7,})(((?=.*[A-Z])(?=.*[a-z]))|((?=.*[A-Z])(?=.*[0-9]))|((?=.*[a-z])(?=.*[0-9]))).*$", "g");
        var enoughRegex = new RegExp("(?=.{4,}).*", "g");
        //var pwd = getObject("txtPassword").value;

        if( false == enoughRegex.test(pwd) ) {
            showUndetermined();
        } else if( strongRegex.test(pwd) ) {
            showStrong();
        } else if( mediumRegex.test( pwd ) ) {
            showMedium();
        } else {
            showWeak();
        }
    }