function checkEmail(strInput) {
	var arrInput = strInput.split("@");
	var arrDomain;
	if (arrInput.length < 2) {
		return false;
	} else {
		arrDomain = ("" + arrInput[1]).split(".");
		if (arrDomain.length < 2) {
			return false;
		} else {
			if ((arrDomain[0].length < 2) || (arrDomain[1].length < 2) || (arrInput[0].length < 2))
				return false;
			else
				return true;
		}
	}
}

function preventSelectDisabled(oSelect) {
    var isOptionDisabled = oSelect.options[oSelect.selectedIndex].disabled;
    if (isOptionDisabled) {
        oSelect.selectedIndex = oSelect.defaultSelectedIndex;
        return false;
    }
    else oSelect.defaultSelectedIndex = oSelect.selectedIndex;
    return true;
}