// Check Empty
function checkempty(pObj){
  if (pObj.value.length==0){
   pObj.select();
   pObj.focus();
   return false
  }else {
   return true
  }
}

function checkmatch(pObj1, pObj2)
{	
	if (pObj1.value != pObj2.value) {		
		pObj1.select();
		pObj1.focus();
		return false;
	} else {
		return true;
	}
}

// Check Password
function checkpassword(pObj){
	if (pObj.value.length < 6 || pObj.value.length > 15){
		pObj.select();
		pObj.focus();
		return false
	}else{
		return true
	} 
}

// Check Confirm Password
function confirmPassword(pObj1, pObj2)
{
	if (pObj1.value != pObj2.value) {
		pObj2.select();
		pObj2.focus();
		alert("Please check your password again. \n The Confirm Password field have to be the same \n as the Password field. (Case sensitive)") 
		return false;
	} else {
		return true;
	}
}

// Check Email
var invalidaddress=new Array()
//invalidaddress[0]="hotmail"
//invalidaddress[1]="rocketmail"
//invalidaddress[2]="yahoo"
//invalidaddress[3]="zdnetmail"
//extend or shorten this list if neccessary
var testresults

function checkemail(pObj){
	if (document.layers||document.all){
		var invalidcheck=0;
		var str=pObj.value
		var filter=/^.+@.+\..{2,3}$/
		if (filter.test(str)){
	    	var tempstring=str.split("@")
		    tempstring=tempstring[1].split(".")
		    for (i=0;i<invalidaddress.length;i++){
		       if (tempstring[0]==invalidaddress[i])
		          invalidcheck=1
		       }
					if (invalidcheck!=1)
					   testresults=true
					else{
             		   pObj.select();
					   pObj.focus();
					   testresults=false
					}
		     }
		else{
			   pObj.select();
			   pObj.focus();
			   testresults=false
		}
        return (testresults)
	} else { // non standard browser
      return true
	}
}

function checkdate(pObj){
  var wDate = pObj.value
  if (isDateString(pObj.value)){
   return true
  } else {
   return false
  }
}

// Verify Credit
function verifyCC(f)
{
  // written by Daniel Amor
  // E-Business Solution Centre
  // Hewlett-Packard GmbH, Germany
  // daniel_amor@hp.com
  // This script is freeware. You can use it in any 
  // application as long as you do mention the author

  // Get relevant information from HTML-FORM
  var cardnumber = f.cardnumber.value;
  var cardtype   = f.cardtype.options[f.cardtype.selectedIndex].value;
  
  // Initialise some temporary variables  
  var result = 0;
  var ccresu = 0;
  var ccOK = true;
  cc = new Array();
  
  // Check if the cardnumber length of Mastercard and Novus are correct!  
  if ((cardtype == "MC") || (cardtype == "NOVUS") || (cardtype == "DIS") || (cardtype == "EC"))
  {
    if (cardnumber.length!=16)
    {
      alert("Your Mastercard, Novus, Discovery or Eurocard number must have 16 digits!");
      ccOK = false;
    }
  }

  // Check if the cardnumber length of Visa is correct!
  if (cardtype == "VISA")
  {
    if ((cardnumber.length!=16) && (cardnumber.length!=13))
    {
      alert("Your Visa card number must have either 13 or 16 digits!");
      ccOK = false;
    }
  }
  
  // Check if the cardnumber length of Mastercard and Novus are correct!  
  if (cardtype == "AMEX")
  {
    if (cardnumber.length!=15)
    {
      alert("Your American Express card number must have 15 digits!");
      ccOK = false;
    }
  }

  if (ccOK == true)
  {
    if (cardnumber.length == 16)
    {
      start  = 0;
      end    = 8;
      offset = 0;
    }
    
    if (cardnumber.length == 13)
    {
      start  = 0;
      end    = 6;
      offset = 1;
    }
   
    if (cardnumber.length == 15)
    {
      start  = 0;
      end    = 7;
      offset = 1;
    }

    for (var i=start;i<end; i++)
    {
      cc[i] = cardnumber[(i*2)+offset] * 2;
      if (cc[i]>9)
      {
        ccresu += Math.floor((cc[i]/10) + (cc[i]%10));
      }
      else
      {
        ccresu += cc[i];
      }
    }
  
    for (var i=start;i<end+offset; i++)
    {
      result += cardnumber[(i*2)+1-offset]-0;
    }
    
    result += ccresu;  
    result = result%10;

    if (result == 0)
    {
      alert("Your credit card information are correct");
    }
    else
    {
      alert("Your credit card information are incorrect");
    }
  }
}

// Check Date Functions
	function isDateString(stringValue) {

		// this function is designed to mimic the "date" portion of the
		// VBScript IsDate() function, allowing dates to be validated
		// with JavaScript in browsers before you run into a problem
		// in ASP pages with date database columns or the VBScript
		// CDate() function; an exception is that string months
		// ("Jan," etc.) are not accepted
		
		// this function does not handle BC dates or dates past 12/31/9999
		
		// you obviously want to strip the comments from production scripts
		
		// create a String object
		var theString = new String(stringValue);
		
		// determine the delimiter character (must be "/" "-" or space)
		var delimiterCharacter
		if ( theString.indexOf('/') > 0 )
			delimiterCharacter = '/';
		else
			if ( theString.indexOf('-') > 0 )
				delimiterCharacter = '-';
			else
				if ( theString.indexOf(' ') > 0 )
					delimiterCharacter = ' ';
				else
					return false;
					
		// split the string into an array of tokens
		var theTokens = theString.split(delimiterCharacter);
		
		// there must be either two or three tokens
		if ( theTokens.length < 2 || theTokens.length > 3 )
			return false;
		
		// convert the tokens to String objects, which will be needed later,
		// stripping a single leading 0
		var tokenIndex;
		for ( tokenIndex = 0; tokenIndex < theTokens.length; tokenIndex++ ) {
			theTokens[tokenIndex] = new String(theTokens[tokenIndex])			
			if ( theTokens[tokenIndex].charAt(0) == '0' )
				theTokens[tokenIndex] = theTokens[tokenIndex].substring(1, theTokens[tokenIndex].length);
		}

		// all of the tokens must be positive integers
		for ( tokenIndex = 0; tokenIndex < theTokens.length; tokenIndex++ ) {
			if ( ! isNonnegativeInteger(theTokens[tokenIndex]) )
				return false;
		}
		
		// we need to identify the year, month, and day tokens
		var numericValue;
		var yearTokenIndex = -1;
		var monthTokenIndex = -1;
		var dayTokenIndex = -1;
		for ( tokenIndex = 0; tokenIndex < theTokens.length; tokenIndex++ ) {
					
			// convert the value
			numericValue = parseInt(theTokens[tokenIndex], 10);
					
			// could this token be a month?
			if ( numericValue <= 12 ) {
					
				// yes; do we already have a month?
				if ( monthTokenIndex == -1 ) {
						
					// no; assign this token to the month and continue
					monthTokenIndex = tokenIndex;
					continue;
				}
				else {
							
					// we already have a month; this token could
					// also be the day; do we already have a day?
					if ( dayTokenIndex == -1 ) {
						
						// no; assign this token to the day and continue
						dayTokenIndex = tokenIndex;
						continue;
					}
					else {
							
						// we already have a day; this token could
						// also be the year; do we alreay have a year?
						if ( yearTokenIndex == -1 ) {
						
							// no; assign this token to the year and continue
							dayTokenIndex = tokenIndex;
							continue;
						}
					}
				}
			}
			else {
						
				// the value is too large for a month;
				// could this token be a day?
				if ( numericValue <= 31 ) {
						
					// yes; do we already have a day?
					if ( dayTokenIndex == -1 ) {
						
						// no; assign this token to the day and continue
						dayTokenIndex = tokenIndex;
						continue;
					}
					else {
							
						// we already have a day; this token could
						// also be the year; do we alreay have a year?
						if ( yearTokenIndex == -1 ) {
						
							// no; assign this token to the year and continue
							dayTokenIndex = tokenIndex;
							continue;
						}
					}
				}
				else {
						
					// the value is too large for a day;
					// could this token be a year?
					if ( numericValue <= 9999 ) {
					
						// yes; do we already have a year?
						if ( yearTokenIndex == -1 ) {
						
							// no; assign this token to the year
							yearTokenIndex = tokenIndex;
						}
					}
				}
			}
		}	// end of for loop
		
		// evaluate, based on the number of tokens
		if ( theTokens.length == 2 ) {
			
			// two tokens can be either a month/year combination or a month/day
			// combination with the current year assumed; either way, we must have
			// a month
			if ( monthTokenIndex == -1 )
				
				// no month
				return false;
				
			// do we have a year?
			if ( ! (yearTokenIndex == -1) ) {
			
				// yes; month/year combination; must be okay
				return true;
			}
			else
				
				// no year; do we have a day?
				if ( ! (dayTokenIndex == -1) ) {
				
					// yes; month/day combination; get the current year
					var today = new Date();
					var currentYear = today.getYear();

					// make sure it's a valid date (we were testing days using
					// 31, and that might be too many for the month)
					return isDate(currentYear, theTokens[monthTokenIndex], theTokens[dayTokenIndex]);
				}
				else
				
					// we have neither a year nor a day
					return false;
		}
		else {
			
			// three tokens; we should have found tokens for year, month, and day
			if ( yearTokenIndex == -1 || monthTokenIndex == -1 || dayTokenIndex == -1 )
				
				// missing one or more
				return false;
			else
				
				// found all; however, VBScript can only handle the following sequences
				if ( monthTokenIndex == 0 ) {
				
					// must be m/d/y
					if ( dayTokenIndex != 1 || yearTokenIndex != 2)
						return false;
				}
				else
					if ( dayTokenIndex == 0 ) {
				
						// must be d/m/y
						if ( monthTokenIndex != 1 || yearTokenIndex != 2)
							return false;
					}
					else
						if ( yearTokenIndex == 0 ) {
				
							// must be y/m/d
							if ( monthTokenIndex != 1 || dayTokenIndex != 2)
								return false;
						}
						else
						
							// something is wrong
							return false;
				
				// make sure it's a valid date (we were testing days using a value
				// of 31, and that might be too many for the actual month)
				return isDate(theTokens[yearTokenIndex], theTokens[monthTokenIndex], theTokens[dayTokenIndex]);
		}
	}

	function isTimeString(stringValue) {

		// this function is designed to mimic the "time" portion of the
		// VBScript IsDate() function, allowing times to be validated
		// with JavaScript in browsers before you run into a problem
		// in ASP pages with date database columns or the VBScript
		// CDate() function
		
		// you obviously want to strip the comments from production scripts
		// and place this function in the library file

		// create a String object
		var theString = new String(stringValue);
		
		// the string must have either two (hours and minutes) or three
		// (hours, minutes and seconds) tokens, delimited by ":";
		// split the string into an array of tokens
		var theTokens = theString.split(':');
		if ( theTokens.length < 2 || theTokens.length > 3 )
			return false;
		
		// convert the tokens to String objects, which will be needed later,
		// stripping whitespace
		var firstToken = new String(theTokens[0])
		firstToken = trim(firstToken);
		var middleToken;
		if ( theTokens.length == 3 ) {
			middleToken = new String(theTokens[1])
			middleToken = trim(middleToken);
		}
		var lastToken = new String(theTokens[theTokens.length - 1])
		lastToken = trim(lastToken);

		// the first token (hours) must be an integer between 0 and 23
		if ( ! isInteger(firstToken) )
			return false;
		if ( ! isIntegerInRange(firstToken, 0, 23) )
			return false;
		
		// are there three tokens?
		if ( theTokens.length == 3 ){
		
			// the middle token (minutes) must be an integer between 0 and 59
			if ( ! isInteger(middleToken) )
				return false;
			if ( ! isIntegerInRange(middleToken, 0, 59) )
				return false;
		}
			
		// the first one or two characters of the last token (either minutes
		// and optional am/pm indicator or seconds and am/pm indicator) must
		// be digits
		if ( ! isDigit(lastToken.charAt(0)) )
			return false;
		
		// the first character is a digit; split the last token into the minutes
		// or seconds value and the indicator; depending on the second character
		var lastValue;
		var ampmIndicator;
		if ( isDigit(lastToken.charAt(1)) ) {
			lastValue = new String(lastToken.substring(0, 2));
			if ( lastToken.length >= 3 )
				ampmIndicator = new String(trim(lastToken.substring(2, lastToken.length)));
			else
				ampmIndicator = new String();
		}
		else {
			lastValue = new String(lastToken.substring(0, 1));
			if ( lastToken.length >= 2 )
				ampmIndicator = new String(trim(lastToken.substring(1, lastToken.length)));
			else
				ampmIndicator = new String();
		}
		ampmIndicator = ampmIndicator.toUpperCase();
		
		// the last value must be between 0 and 59
		if ( ! isIntegerInRange(lastValue, 0, 59) )
			return false;
		
		// check the am/pm indicator, if there is one
		if ( ampmIndicator.length > 0 )
			if ( ! ( ampmIndicator == "AM" || ampmIndicator == "PM" ) )
				return false;
				
		// valid time
		return true;
	}

	// most of the following was derived from Netscape's FormChek.js
	// library, which should be reviewed for documentation and comments

	var daysInMonth = makeArray(12);
	daysInMonth[1] = 31;
	daysInMonth[2] = 29;
	daysInMonth[3] = 31;
	daysInMonth[4] = 30;
	daysInMonth[5] = 31;
	daysInMonth[6] = 30;
	daysInMonth[7] = 31;
	daysInMonth[8] = 31;
	daysInMonth[9] = 30;
	daysInMonth[10] = 31;
	daysInMonth[11] = 30;
	daysInMonth[12] = 31;

	var whitespace = " \t\n\r";

	function charInString(c, s) {
		for (i = 0; i < s.length; i++) {
			if (s.charAt(i) == c)
				return true;
	    }
	    return false
	}

	function daysInFebruary(year) {
	    return ( ((year % 4 == 0) && ((!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
	}

	function isDate(year, month, day) {
	    if ( ! ( isYear(year) && isMonth(month) && isDay(day) ) ) return false;
	    var intYear = parseInt(year);
	    var intMonth = parseInt(month);
	    var intDay = parseInt(day);
	    if ( intDay > daysInMonth[intMonth] ) return false; 
	    if ( ( intMonth == 2 ) && ( intDay > daysInFebruary(intYear) ) ) return false;
	    return true;
	}

	function isDay(s) {
	    return isIntegerInRange(s, 1, 31);
	}

	function isDigit(c) {
		return ( ( c >= "0" ) && ( c <= "9" ) )
	}

	function isInteger(s) {
		var i;
	    for ( i = 0; i < s.length; i++ )
	    {   
	        var c = s.charAt(i);
	        if ( ! isDigit(c) ) return false;
	    }
	    return true;
	}

	function isIntegerInRange(s, a, b) {
	    if ( ! isInteger(s) ) return false;
	    var num = parseInt (s);
	    return ( ( num >= a ) && ( num <= b ) );
	}

	function isMonth(s) {
	    return isIntegerInRange (s, 1, 12);
	}

	function isNonnegativeInteger(s) {
	    return ( isSignedInteger(s) && ( parseInt(s) >= 0 ) );
	}

	function isSignedInteger(s) {
	    var startPos = 0;
	    if ( ( s.charAt(0) == "-" ) || ( s.charAt(0) == "+" ) )
	       startPos = 1;    
	    return ( isInteger(s.substring(startPos, s.length)) )
	}

	function isYear(s) {
		if ( ! isNonnegativeInteger(s) ) return false;
	    return ( (s.length == 2) || (s.length == 4) );
	}

	function lTrim(s) {
		var i = 0;
	    while ( (i < s.length) && charInString(s.charAt(i), whitespace) )
	       i++;
	    return s.substring(i, s.length);
	}

	function makeArray(n) {
	   for ( var i = 1; i <= n; i++ ) {
	      this[i] = 0
	   } 
	   return this
	}

	function rTrim(s) {
		var i = 0;
	    while ( (i < s.length) && charInString(s.charAt(i), whitespace) )
	       i++;
	    return s.substring(i, s.length);
	}

	function trim(s) {
		return lTrim(rTrim(s));
	}

// Close Window
function CloseWindow()
{
	if ( self.parent == self )
	{	window.close()	}	
	else
	{	self.parent.close()	}
}