/*
	JavaScript Form Validator 
	Version 2.0.2
	http://www.javascript-coder.com
	Copyright Simfatic Solutions
*/
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;
		}
	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) {
	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;
			}
		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";
					}
				alert(strError);
				return false;
				}
			break;
			}
		case "maxlength" : case "maxlen" : {
			if(eval(objValue.value.length) > eval(cmdvalue)) {
				if(!strError || strError.length == 0) {
					strError = objValue.name + " : " + cmdvalue + " characters maximum ";
					}
				alert(strError + "\n[Current length = " + objValue.value.length + " ]");
				return false;
				}
			break;
			}
		case "minlength" : case "minlen" : {
			if(eval(objValue.value.length) < eval(cmdvalue)) {
				if(!strError || strError.length == 0) {
					strError = objValue.name + " : " + cmdvalue + " characters minimum ";
					}
				alert(strError + "\n[Current length = " + objValue.value.length + " ]");
				return false;
				}
			break;
			}
		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 ";
					}
				alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
				return false;
				}
			break;
			}
		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 ";
					}
				alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
				return false;
				}
			break;
			}
		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 ";
					}
				alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
				return false;
				}
			break;
			}
		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 _";
					}
				alert(strError + "\n [Error character position " + eval(charpos + 1) + "]");
				return false;
				}
			break;
			}
		case "email" : {
			if(!validateEmailv2(objValue.value)) {
				if(!strError || strError.length == 0) {
					strError = objValue.name + ": Enter a valid Email address ";
					}
				alert(strError);
				return false;
				}
			break;
			}
		case "lt" : case "lessthan" : {
			if(isNaN(objValue.value)) {
				alert(objValue.name + ": Should be a number ");
				return false;
				}
			if(eval(objValue.value) >= eval(cmdvalue)) {
				if(!strError || strError.length == 0) {
					strError = objValue.name + " : value should be less than " + cmdvalue;
					}
				alert(strError);
				return false;
				}
			break;
			}
		case "gt" : case "greaterthan" : {
			if(isNaN(objValue.value)) {
				alert(objValue.name + ": Should be a number ");
				return false;
				}
			if(eval(objValue.value) <= eval(cmdvalue)) {
				if(!strError || strError.length == 0) {
					strError = objValue.name + " : value should be greater than " + cmdvalue;
					}
				alert(strError);
				return false;
				}
			break;
			}
		case "regexp" : {
			if(objValue.value.length > 0) {
				if(!objValue.value.match(cmdvalue)) {
					if(!strError || strError.length == 0) {
						strError = objValue.name + ": Invalid characters found ";
						}
					alert(strError);
					return false;
					}
				}
			break;
			}
		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 ";
					}
				alert(strError);
				return false;
				}
			break;
			}
		}
	return true;
	}