function MM_validateForm() { //v4.0
    if (document.getElementById) {
        var i, p, q, nm, test, num, min, max, errors = '', args = MM_validateForm.arguments;
        for (i = 0; i < (args.length - 2); i += 3) {
            test = args[i + 2]; val = document.getElementById(args[i]);
            if (val) {
                nm = val.name; if ((val = val.value) != "") {
                    if (test.indexOf('isEmail') != -1) {
                        p = val.indexOf('@');
                        if (p < 1 || p == (val.length - 1)) errors += '- ' + nm + ' must contain an e-mail address.\n';
                    } else if (test != 'R') {
                        num = parseFloat(val);
                        if (isNaN(val)) errors += '- ' + nm + ' must contain a number.\n';
                        if (test.indexOf('inRange') != -1) {
                            p = test.indexOf(':');
                            min = test.substring(8, p); max = test.substring(p + 1);
                            if (num < min || max < num) errors += '- ' + nm + ' must contain a number between ' + min + ' and ' + max + '.\n';
                        } 
                    } 
                } else if (test.charAt(0) == 'R') errors += '- ' + nm + ' is required.\n';
            }
        } if (errors) alert('The following error(s) occurred:\n' + errors);
        document.MM_returnValue = (errors == '');
    } 
}