function handleEnter(field, event) {
    try {
        var keyCode = document.all ? event.keyCode : event.which;
        if (keyCode == 13) {
            if ((document.getElementById(field).type == "button") || (document.getElementById(field).type == "submit") || (document.getElementById(field).tagName == "A")) {
                document.getElementById(field).click();
            } else {
                document.getElementById(field).focus();
            }
            return false;
        }
        else {
            return true;
        }
    } catch (err) {

    }
}

function focusTxt(txt, defaultVal) {
    if (txt.value == defaultVal) {
        txt.value = '';
    }
}

function blurTxt(txt, defaultVal) {
    if (txt.value == '') {
        txt.value = defaultVal;
    }
}

function ShowHideElement(ElementId) {
    try {
        var obj = document.getElementById(ElementId);
        if (obj != null && obj != 'undefined') {
            if (obj.style.display == 'none') {
                obj.style.display = '';
            } else {
                obj.style.display = 'none'
            }
        }
    } catch (err) {
        //DO NOTHING
    }
}