function contactUS() {
    str1=/\@/g;
    if (cu.contactEmail.value=="") {
        alert("Please Enter Your Contact Email.");
        cu.contactEmail.focus();
        cu.contactEmail.select();
        return false;
    }
    if (cu.contactEmail.value.length < 5 || cu.contactEmail.value.match(str1) == null) {
        alert("Please Enter a Valid Contact Email Address.");
        cu.contactEmail.focus();
        cu.contactEmail.select();
        return false;    
    }
    if (cu.contactSubject.value=="") {
        alert("Please Select a Contact Subject.");
        cu.contactSubject.focus();
        return false;
    }
    if (cu.contactMessage.value=="") {
        alert("Please Enter a Message.");
        cu.contactMessage.focus();
        cu.contactMessage.select();
        return false;
    }
    return true;
}