function verify_email(str) {
    var at = "@"
    var dot = "."
    var lat = str.indexOf(at)
    var lstr = str.length
    var ldot = str.indexOf(dot)
    if (str.indexOf(at) == -1) { return false }
    if (str.indexOf(at) == -1 || str.indexOf(at) == 0 || str.indexOf(at) == lstr) { return false }
    if (str.indexOf(dot) == -1 || str.indexOf(dot) == 0 || str.indexOf(dot) == lstr) { return false }
    if (str.indexOf(at, (lat + 1)) != -1) { return false }
    if (str.substring(lat - 1, lat) == dot || str.substring(lat + 1, lat + 2) == dot) { return false }
    if (str.indexOf(dot, (lat + 2)) == -1) { return false }
    if (str.indexOf(" ") != -1) { return false }
    return true
}

function ensureNumeric(strString, mini, maxi) {
    var strValidChars = "0123456789";
    var strChar;
    var blnResult = true;
    if (strString.length < mini | strString.length > maxi) return false;
    for (i = 0; i < strString.length && blnResult == true; i++) {
        strChar = strString.charAt(i);
        if (strValidChars.indexOf(strChar) == -1) {
            blnResult = false;
        }
    }
    return blnResult;
}

function check_form(str_form, str_args) { // v0 copyright Andrew Watson Paligap 2004 (CALL) onClick="check_form('frm_subscribe','str_name|t|1|You have not entered your name.,str_email|e|1|You have entered an invalid e-mail address.');return document.check_form_return;"
    var arr_args = str_args.split(",")
    str_error_message = ""
    for (i = 0; i < arr_args.length; i++) {
        var arr_this_element = arr_args[i].split("|")
        str_field = arr_this_element[0]
        str_type = arr_this_element[1]
        bln_required = arr_this_element[2]
        str_message = arr_this_element[3]
        this_value = eval("document." + str_form + "." + str_field + ".value")
        this_value = this_value.replace(" ", "")
        if (str_type == "t") { //Check String
            if (bln_required == 1) {
                if (this_value == '') { str_error_message = str_error_message + str_message + "\n\n" }
            }
        } else if (str_type == "e") { //Check Email
            if (bln_required == 1) {
                if (this_value == '' || !verify_email(this_value)) { str_error_message = str_error_message + str_message + "\n\n" }
            } else {
                if (this_value != '' && !verify_email(this_value)) { str_error_message = str_error_message + str_message + "\n\n" }
            }
        } else if (str_type == "n") { //Check Numeric
            if (bln_required == 1) {
                if (this_value == '' || isNaN(this_value)) { str_error_message = str_error_message + str_message + "\n\n" }
            } else {
                if (this_value != '' && isNaN(this_value)) { str_error_message = str_error_message + str_message + "\n\n" }
            }
        } else if (str_type == "d") { //Check Date
            if (bln_required == 1) {
                if (this_value == '' || !verify_date(this_value)) { str_error_message = str_error_message + str_message + "\n\n" }
            } else {
                if (this_value != '' && !verify_date(this_value)) { str_error_message = str_error_message + str_message + "\n\n" }
            }
        }
    }
    if (str_error_message != "") {
        str_error_message = "Incomplete Form Information!                              \n________________________\n\n" + str_error_message
        alert(str_error_message)
        document.check_form_return = false
    } else {
        document.check_form_return = true
        //eval("document.forms." + str_form + ".submit();")
    }
}