/*  Program name		: form_check.js

 	Program function	: general form checking client side js functions 	

	Author				: Colbridge

	Developed by	    : Colbridge Web Logics - www.colbridge.com 

	

sample usage of some of the functions declared below are as follows:

<SCRIPT language=javascript src="./js/form_check.js"></SCRIPT>

<script language="javascript">

<!---  

function Validate(theform)

{

	if (isEmpty(theform.City.value)){    //this is text box validation example

  		alert("Please enter your City.\nNo spaces or blanks allowed.");

		theform.City.focus();

		return false; 

	}

		

	if(theform.int_country_id.selectedIndex == 0){  //this is dropdown validation example

	  alert("Please Select your Counrty");

	  theform.int_country_id.focus();

	  return false;	

	}	

	

	var retval = usernameCheck(theform.dealer_username.value) //sample username validation example

	if (retval == false){

		theform.dealer_username.focus();

  		return false;

	}	

	

	var retval = emailCheck(theform.email.value)  // email validation example

	if (retval == false){

		theform.email.focus();

  		return false;

	}	 

}	

--->

</script>	

--------------------------------------------------------------------*/

//  function to trim a string

function trim(str_key){

	str_key = rtrim(str_key);

	str_key = ltrim(str_key);

	return str_key;

}



// function to right trim a string

function rtrim(str_key){

	while(str_key.charAt(str_key.length-1)==" "){

		str_key=str_key.substr(0,str_key.length-1);

	}	

	return str_key;

}



// function to left trim a string

function ltrim(str_key){

	while(str_key.charAt(0)==" "){

		str_key=str_key.substr(1);

	}	

	return str_key;

}



// function to check an year YYYY-MM-DD

function checkYear(strYear){	

	var dateStr = new String(strYear);

	dateStr = ltrim(dateStr);

	dateStr = rtrim(dateStr);

	

	//var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{2}|\d{4})$/; 

	var datePat = /^[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9].*$/; 

	days = new Array(0,31,28,31,30,31,30,31,31,30,31,30,31);

	

	var matchArray = dateStr.match(datePat); // is the format ok? 

	if (matchArray == null){

		alert("Enter date in YYYY-MM-DD format. eg 2003-01-21");

		return false;

	}

	else{

		var temp_year = 0;

		var temp_month = 0;

		var i = parseInt(dateStr.substr(0, 4));

		temp_year = i;

		if(i < 2000){

			alert("Please enter an year greater than 2000");

			return false;

		}

		

		i = parseInt(dateStr.substr(5, 2))

		if(dateStr.substr(5, 1) == "0"){

			i = parseInt(dateStr.substr(6, 1))

		}

		if(i < 1 || i > 12){

			alert("Please enter a valid month");

			return false;

		}

		temp_month = i;

		var d =days[i];

		

		i = parseInt(dateStr.substr(8))

		if((temp_year % 4 == 0) && (temp_month == 2)){

			if(i < 0 || i > 29){

				alert("Please enter a valid day curresponding to the current year and month.");

				return false;

			}

		}else if(i < 0 || i > d){

			alert("Please enter a valid day curresponding to the current year and month.");

			return false;

		}

	}

	return true; 

}



// function to confirm database setup

function confirm_setup(){

	if(confirm("Tables already exists.\nThis action will drop all tables and data and it CANNOT BE UNDONE. \nAre you sure that you want to run Setup again?")){

		return true;

	}

	return false;

}

// function to open a new window

function openWin(windowURL, windowName, windowFeatures){ 

	window.open(windowURL, windowName, windowFeatures);

	return false; 

}



// function to confirm record deletion

function confirmCleanUp(Link) {

   if (confirm("Are you sure you want to delete ?")) {

      location.href=Link;

   }

}



// to simulate the clicking of the browser back button

function fn_back(){

	window.history.back();

}	



// function to check YEAR with 4 digit

function isYear(snum)

{

	var reInteger = /^[1-9]\d{3}$/

	return reInteger.test(snum)

}

// function to check indiger field

function IsInteger(snum)

{

	var reInteger = /^\d+$/

    return reInteger.test(snum)

}



// function to check SSN US

function IsSSN(snum)

{

	var reSSN = /^(\d{3})(-)(\d{2})(-)(\d{4})$/	

    return reSSN.test(snum)

}



// function to check US phone - fomat 999-999-9999

function IsPhone(snum)

{

	var rePhone = /^(\d{3})(-)(\d{3})(-)(\d{4})$/	

    return rePhone.test(snum)

}



// Check whether string s is empty.

function isEmpty(s)

{   

	if(trim(s) == ""){

		return true;

	}else{

		return false;

	}

}



// function to check Price value ( with two decimal places )

function isPrice(s)

{  

	s = trim(s);

	var reFloat = /^[\d\.]((\d+(\.\d{0,2})?)|((\d*\.)?\d{0,2}))$/	

	return reFloat.test(s)	   	

}

// function to check float/decimal fileds

function isFloat(s)

{  

	var reFloat = /^((\d+(\.\d*)?)|((\d*\.)?\d+))$/	

	return reFloat.test(s)	   	

}



// function to check username fields

function usernameCheck (s){

  // this is done to avoid any special characters

  var reUsername = /^[a-zA-Z0-9][a-zA-Z0-9_]*$/

  

  if (isEmpty(s)){

  	 alert("Please enter a desired Username. Minimum 8 characters.\nNo spaces, blanks or special characters , except '_'.");

	 return false; 

  } 

  else{

   	 var matchArray = s.match(reUsername); // is the format ok? 

	 if (matchArray == null) { 

		alert("Username should contain only \nalphabets, digits or underscore '_'.\n '_' should not be the first character.");

		return false; 

	 }	 	

	 else{ 

	  	 if(s.length<8){		

			alert("Username should be minimum of 8 characters");	

			return false; 

		 }	

	 }			

  }      	 

  return true;

}



// function to check username fields

function passwordCheck (s){

  // this is done to avoid any special characters

  var rePassword = /^[a-zA-Z0-9][a-zA-Z0-9~!@#$%^&*()]*$/

  

  if (isEmpty(s)){

  	 alert("Please enter a desired Password. Minimum 8 characters.\nNo spaces and blanks allowed.");

	 return false; 

  } 

  else{

   	 var matchArray = s.match(rePassword); // is the format ok? 

	 if (matchArray == null) { 

		alert("Password should contain only alphabets, digits\nor only these special characters ~!@#$%^&*()$\nbut not the first character.");

		return false; 

	 }	 	

	 else{ 

	  	 if(s.length<8){		

			alert("Password should be minimum of 8 characters");	

			return false; 

		 }	

	 }			

  }      	 

  return true;

}

	

// function to validate date field

function isValidDate(dateStr) { 

// Checks for the following valid date formats: 

// MM/DD/YY MM/DD/YYYY MM-DD-YY MM-DD-YYYY 

// Also separates date into month, day, and year variables 



var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{2}|\d{4})$/; 



// To require a 4 digit year entry, use this line instead: 

// var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/; 



var matchArray = dateStr.match(datePat); // is the format ok? 

if (matchArray == null) { 

	alert("Date is not in a valid format.") 

	return false; 

} 

month = matchArray[1]; // parse date into variables 

day = matchArray[3]; 

year = matchArray[4]; 

if (month < 1 || month > 12) { // check month range 

alert("Month must be between 1 and 12."); 

return false; 

} 

if (day < 1 || day > 31) {

alert("Day must be between 1 and 31."); 

return false; 

} 

if ((month==4 || month==6 || month==9 || month==11) && day==31) {

alert("Month "+month+" doesn't have 31 days!") 

return false 

} 

if (month == 2) { // check for february 29th 

var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); 

if (day>29 || (day==29 && !isleap)) { 

alert("February " + year + " doesn't have " + day + " days!"); 

return false; 

} 

} 

return true; // date is valid 

} 

// End date validation -------------------------------------> 

function isValidBDate(dateStr) { 

// Checks for the following valid date formats: 

// MM/DD/YY MM/DD/YYYY MM-DD-YY MM-DD-YYYY 

// Also separates date into month, day, and year variables 



//var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{2}|\d{4})$/; 



// To require a 4 digit year entry, use this line instead: 

 var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/; 



var matchArray = dateStr.match(datePat); // is the format ok? 

if (matchArray == null) { 

	alert("Date is not in a valid format.and it must in mm/dd/yyyy. ") 

	return false; 

} 

month = matchArray[1]; // parse date into variables 

day = matchArray[3]; 

year = matchArray[4]; 

if (month < 1 || month > 12) { // check month range 

alert("Month must be between 1 and 12."); 

return false; 

} 

if (day < 1 || day > 31) {

alert("Day must be between 1 and 31."); 

return false; 

} 

if ((month==4 || month==6 || month==9 || month==11) && day==31) {

alert("Month "+month+" doesn't have 31 days!") 

return false 

} 

if (month == 2) { // check for february 29th 

var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); 

if (day>29 || (day==29 && !isleap)) { 

alert("February " + year + " doesn't have " + day + " days!"); 

return false; 

} 

} 

return true; // date is valid 

} 



function emailCheck(emailStr) {

	/* The following pattern is used to check if the entered e-mail address

	   fits the user@domain format.  It also is used to separate the username

	   from the domain. */

	var emailPat=/^(.+)@(.+)$/

	/* The following string represents the pattern for matching all special

	   characters.  We don't want to allow special characters in the address. 

	   These characters include ( ) < > @ , ; : \ " . [ ]    */

	var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"

	/* The following string represents the range of characters allowed in a 

	   username or domainname.  It really states which chars aren't allowed. */

	var validChars="\[^\\s" + specialChars + "\]"

	/* The following pattern applies if the "user" is a quoted string (in

	   which case, there are no rules about which characters are allowed

	   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com

	   is a legal e-mail address. */

	var quotedUser="(\"[^\"]*\")"

	/* The following pattern applies for domains that are IP addresses,

	   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal

	   e-mail address. NOTE: The square brackets are required. */

	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/

	/* The following string represents an atom (basically a series of

	   non-special characters.) */

	var atom=validChars + '+'

	/* The following string represents one word in the typical username.

	   For example, in john.doe@somewhere.com, john and doe are words.

	   Basically, a word is either an atom or quoted string. */

	var word="(" + atom + "|" + quotedUser + ")"

	// The following pattern describes the structure of the user

	var userPat=new RegExp("^" + word + "(\\." + word + ")*$")

	/* The following pattern describes the structure of a normal symbolic

	   domain, as opposed to ipDomainPat, shown above. */

	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

	

	

	/* Finally, let's start trying to figure out if the supplied address is

	   valid. */

	

	/* Begin with the coarse pattern to simply break up user@domain into

	   different pieces that are easy to analyze. */

	var matchArray=emailStr.match(emailPat)

	if (matchArray==null) {

	  /* Too many/few @'s or something; basically, this address doesn't

	     even fit the general mould of a valid e-mail address. */

		alert("Email address seems incorrect (check @ and .'s)")

		return false

	}

	var user=matchArray[1]

	var domain=matchArray[2]

	

	// See if "user" is valid 

	if (user.match(userPat)==null) {

	    // user is not valid

	    alert("The username doesn't seem to be valid.")

	    return false

	}

	

	/* if the e-mail address is at an IP address (as opposed to a symbolic

	   host name) make sure the IP address is valid. */

	var IPArray=domain.match(ipDomainPat)

	if (IPArray!=null) {

	    // this is an IP address

		  for (var i=1;i<=4;i++) {

		    if (IPArray[i]>255) {

		        alert("Destination IP address is invalid!")

			return false

		    }

	    }

	    return true

	}

	

	// Domain is symbolic name

	var domainArray=domain.match(domainPat)

	if (domainArray==null) {

		alert("The Domain Name doesn't seem to be valid.")

	    return false

	}

	

	/* domain name seems valid, but now make sure that it ends in a

	   three-letter word (like com, edu, gov) or a two-letter word,

	   representing country (uk, nl), and that there's a hostname preceding 

	   the domain or country. */

	

	/* Now we need to break up the domain to get a count of how many atoms

	   it consists of. */

	var atomPat=new RegExp(atom,"g")

	var domArr=domain.match(atomPat)

	var len=domArr.length

	if (domArr[domArr.length-1].length<2 || 

	    domArr[domArr.length-1].length>3) {

	   // the address must end in a two letter or three letter word.

	   alert("The address must end in a three-letter domain, or two letter country.")

	   return false

	}

	

	// Make sure there's a host name preceding the domain.

	if (len<2) {

	   var errStr="This E-mail address is missing a hostname!"

	   alert(errStr)

	   return false

	   }

	   // If we've gotten this far, everything's valid!

	return true	   

}

function delete_confirm(){

	if(confirm("Do you want to delete this record?")){

		return true;

	}

	return false;

}

// function to check username fields

function uniqurlCheck(s){

	// this is done to avoid any special characters

	var reUsername = /^[a-zA-Z0-9][a-zA-Z0-9_]*$/

	var matchArray = s.match(reUsername); // is the format ok? 

	if (matchArray == null) { 

		alert("Url should contain only \nalphabets, digits or underscore '_'.\n '_' should not be the first character.");

		return false; 

	}	 	

	return true;

}

// end o