/*
  -------------------------------------------------------------------------
	                    JavaScript Form Validator 
                                Version 2.0.2
	Copyright 2003 JavaScript-coder.com. All rights reserved.
	You use this script in your Web pages, provided these opening credit
    lines are kept intact.
	The Form validation script is distributed free from JavaScript-Coder.com

	You may please add a link to JavaScript-Coder.com, 
	making it easy for others to find this script.
	Checkout the Give a link and Get a link page:
	http://www.javascript-coder.com/links/how-to-link.php

    You may not reprint or redistribute this code without permission from 
    JavaScript-Coder.com.
	
	JavaScript Coder
	It precisely codes what you imagine!
	Grab your copy here:
		http://www.javascript-coder.com/
    -------------------------------------------------------------------------  
*/
function trim(str){
    while (str.charAt(0) == " ") {
        // remove leading spaces
        str = str.substring(1);
    }
    while (str.charAt(str.length - 1) == " ") {
        // remove trailing spaces
        str = str.substring(0, str.length - 1);
    }
    return str;
}

function validateEmailDomain(email){
    evalue = email.toLowerCase();
    lenth1 = evalue.length;
    index1 = evalue.indexOf("@");
    tvalue = trim(evalue.substring(index1 + 1, lenth1));
    var domainname = new String("gmail.com,yahoo.com,msn.com,hotmail.com,invivodata.com,crfhealth.com,etrials.com");
    //alert(domainname + " " + tvalue + " " + domainname.indexOf(email));	
    if (domainname.indexOf(tvalue) != -1) {
    
        return false;
    }
    return true;
}

function getCheckboxValues(){
    if (document.getElementById('Email_preference').value == 'no') {
        document.getElementById('form_contact_newsletter_h').value = 'True';
    }
    else {
        document.getElementById('form_contact_newsletter_h').value = 'False';
    }
}

function Validator(frmname){
    this.formobj = document.forms[frmname];
    if (!this.formobj) {
        alert("BUG: couldnot get Form object " + frmname);
        return;
    }
    if (this.formobj.onsubmit) {
        this.formobj.old_onsubmit = this.formobj.onsubmit;
        this.formobj.onsubmit = null;
    }
    else {
        this.formobj.old_onsubmit = null;
    }
    this.formobj.onsubmit = form_submit_handler;
    this.addValidation = add_validation;
    this.setAddnlValidationFunction = set_addnl_vfunction;
    this.clearAllValidations = clear_all_validations;
}

function set_addnl_vfunction(functionname){
    this.formobj.addnlvalidation = functionname;
}

function clear_all_validations(){
    for (var itr = 0; itr < this.formobj.elements.length; itr++) {
        this.formobj.elements[itr].validationset = null;
    }
}

function form_submit_handler(){
    for (var itr = 0; itr < this.elements.length; itr++) {
        if (this.elements[itr].validationset &&
        !this.elements[itr].validationset.validate()) {
            return false;
        }
    }
    if (this.addnlvalidation) {
        str = " var ret = " + this.addnlvalidation + "()";
        eval(str);
        if (!ret) 
            return ret;
    }
    return true;
}
function add_validation(itemname, descriptor, errstr){
    if (!this.formobj) {
        alert("BUG: the form object is not set properly");
        return;
    }//if
    var itemobj = this.formobj[itemname];
    if (!itemobj) {
        alert("BUG: Couldnot get the input object named: " + itemname);
        return;
    }
    if (!itemobj.validationset) {
        itemobj.validationset = new ValidationSet(itemobj);
    }
    itemobj.validationset.add(descriptor, errstr);
}

function ValidationDesc(inputitem, desc, error){
    this.desc = desc;
    this.error = error;
    this.itemobj = inputitem;
    this.validate = vdesc_validate;
}

function vdesc_validate(){
    if (!V2validateData(this.desc, this.itemobj, this.error)) {
        this.itemobj.focus();
        return false;
    }
    return true;
}

function ValidationSet(inputitem){
    this.vSet = new Array();
    this.add = add_validationdesc;
    this.validate = vset_validate;
    this.itemobj = inputitem;
}

function add_validationdesc(desc, error){
    this.vSet[this.vSet.length] = new ValidationDesc(this.itemobj, desc, error);
}

function vset_validate(){
    for (var itr = 0; itr < this.vSet.length; itr++) {
        if (!this.vSet[itr].validate()) {
            return false;
        }
    }
    return true;
}

function validateEmailv2(email){
    // a very simple email validation checking. 
    // you can add more complex email checking if it helps 
    if (email.length <= 0) {
        return true;
    }
    var splitted = email.match("^(.+)@(.+)$");
    if (splitted == null) 
        return false;
    if (splitted[1] != null) {
        var regexp_user = /^\"?[\w-_\.]*\"?$/;
        if (splitted[1].match(regexp_user) == null) 
            return false;
    }
    if (splitted[2] != null) {
        var regexp_domain = /^[\w-\.]*\.[A-Za-z]{2,4}$/;
        if (splitted[2].match(regexp_domain) == null) {
            var regexp_ip = /^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
            if (splitted[2].match(regexp_ip) == null) 
                return false;
        }// if
        return true;
    }
    return false;
}

function V2validateData(strValidateStr, objValue, strError){
    var epos = strValidateStr.search("=");
    var command = "";
    var cmdvalue = "";
    if (epos >= 0) {
        command = strValidateStr.substring(0, epos);
        cmdvalue = strValidateStr.substr(epos + 1);
    }
    else {
        command = strValidateStr;
    }
    switch (command) {
        case "req":
        case "required":{
            if (eval(objValue.value.length) == 0) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + " : Required Field";
                }//if 
                alert(strError);
                return false;
            }//if 
            break;
        }//case required 
        case "maxlength":
        case "maxlen":{
            if (eval(objValue.value.length) > eval(cmdvalue)) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + " : " + cmdvalue + " characters maximum ";
                }//if 
                alert(strError + "\n[Current length = " + objValue.value.length + " ]");
                return false;
            }//if 
            break;
        }//case maxlen 
        case "minlength":
        case "minlen":{
            if (eval(objValue.value.length) < eval(cmdvalue)) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + " : " + cmdvalue + " characters minimum  ";
                }//if               
                alert(strError + "\n[Current length = " + objValue.value.length + " ]");
                return false;
            }//if 
            break;
        }//case minlen 
        case "alnum":
        case "alphanumeric":{
            var charpos = objValue.value.search("[^A-Za-z0-9]");
            if (objValue.value.length > 0 && charpos >= 0) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + ": Only alpha-numeric characters allowed ";
                }//if 
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 
            break;
        }//case alphanumeric 
        case "num":
        case "numeric":{
            var charpos = objValue.value.search("[^0-9]");
            if (objValue.value.length > 0 && charpos >= 0) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + ": Only digits allowed ";
                }//if               
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 
            break;
        }//numeric 
        case "emaildomain":{
            if (!validateEmailDomain(objValue.value)) {
                if (!strError || strError.length == 0) {
                    strError = "Please register using a valid corporate email account, as opposed to a personal address. PHT apologizes for any inconvenience.";
                }//if                                               
                alert(strError);
                return false;
            }//if 
            break;
        }//case email 
        case "alphabetic":
        case "alpha":{
            var charpos = objValue.value.search("[^A-Za-z]");
            if (objValue.value.length > 0 && charpos >= 0) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + ": Only alphabetic characters allowed ";
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 
            break;
        }//alpha 
        case "alnumhyphen":{
            var charpos = objValue.value.search("[^A-Za-z0-9\-_]");
            if (objValue.value.length > 0 && charpos >= 0) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + ": characters allowed are A-Z,a-z,0-9,- and _";
                }//if                             
                alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
                return false;
            }//if 			
            break;
        }
        case "email":{
            if (!validateEmailv2(objValue.value)) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + ": Enter a valid Email address ";
                }//if                                               
                alert(strError);
                return false;
            }//if 
            break;
        }//case email 
        case "lt":
        case "lessthan":{
            if (isNaN(objValue.value)) {
                alert(objValue.name + ": Should be a number ");
                return false;
            }//if 
            if (eval(objValue.value) >= eval(cmdvalue)) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + " : value should be less than " + cmdvalue;
                }//if               
                alert(strError);
                return false;
            }//if             
            break;
        }//case lessthan 
        case "gt":
        case "greaterthan":{
            if (isNaN(objValue.value)) {
                alert(objValue.name + ": Should be a number ");
                return false;
            }//if 
            if (eval(objValue.value) <= eval(cmdvalue)) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + " : value should be greater than " + cmdvalue;
                }//if               
                alert(strError);
                return false;
            }//if             
            break;
        }//case greaterthan 
        case "regexp":{
            if (objValue.value.length > 0) {
                if (!objValue.value.match(cmdvalue)) {
                    if (!strError || strError.length == 0) {
                        strError = objValue.name + ": Invalid characters found ";
                    }//if                                                               
                    alert(strError);
                    return false;
                }//if 
            }
            break;
        }//case regexp 
        case "dontselect":{
            if (objValue.selectedIndex == null) {
                alert("BUG: dontselect command for non-select Item");
                return false;
            }
            if (objValue.selectedIndex == eval(cmdvalue)) {
                if (!strError || strError.length == 0) {
                    strError = objValue.name + ": Please Select one option ";
                }//if                                                               
                alert(strError);
                return false;
            }
            break;
        }//case dontselect 
    }//switch 
    return true;
}