function checkuser(s)

{

	

	if (s.length==0)

	{		return false;	}

	else	if (s ==" ")

	{		return false;	}

	else

	{		return true;	}

}



function checkNric(s)

{

	

	if (s.length==0)

	{

		return false;

	}

	else	if (s =="")

	{

		return false;

	}

	

	else

	{

		return true;



	}

}



function checkemail(s)	

{



var EmailOk  = true

var Temp     = s

var AtSym    = Temp.value.indexOf('@')

var AtSym1    = Temp.value.lastIndexOf('@')

var Period   = Temp.value.lastIndexOf('.')

var Period1   = Temp.value.indexOf('.')

var Space    = Temp.value.indexOf(' ')

var c=Temp.value.charAt(AtSym)

var Length   = Temp.value.length - 1   // Array is from 0 to length-1

if ((AtSym < 1) ||                     // '@' cannot be in first position

    (Period <= AtSym+1) ||             // Must be atleast one valid char btwn '@' and '.'

    (Period == Length ) ||             // Must be atleast one valid char after '.'

    (Space  != -1)    ||                // No empty spaces permitted

	(Temp.value.charAt(AtSym) == Temp.value.charAt(AtSym+1)) ||  // '@' cannot be in concecutive position

	(Temp.value.charAt(Period1) == Temp.value.charAt(Period1+1)) ||   // '.' cannot be in concecutive position

	(Temp.value.charAt(Period) == Temp.value.charAt(Period-1)) ||

	(Temp.value.charAt(AtSym1) == Temp.value.charAt(AtSym1-1))

	)

	

   {  

      EmailOk = false

      

   }  

return EmailOk

}



function isEmpty (s) {

  return ( ( s == null ) || ( s.length == 0 ) )

}



function isEmptyContact (s) {

	    return ( ( s == null ) || ( s.length == 0 ) ||  ( s.length == 1 ) )

	

}

function isWhitespace (s) { 

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

 if ( isEmpty (s) ) return true;



   for ( var i = 0; i < s.length; i++ )  {

	   var c = s.charAt(i);   if ( whitespace.indexOf ( c ) == -1 ) return false; 

	   }

  return true;

}

function checkMob(s)

{

    if (isWhitespace(s))

    {

        return false;

    }

    else if((isNaN(s)) || s.length!=8)

    {

        return false;

    }

    else if (s.substr(0,1)!="9" && s.substr(0,1)!="8")

    {

		      return false;

    }

    return true;

}

function checkContact(s)

{

    if (isWhitespace(s))

    {

        return false;

    }

    else if((isNaN(s)) || s.length!=8)

    {

        return false;

    }

    else if (s.substr(0,1)!="6" && s.substr(0,1)!="9" && s.substr(0,1)!="8")

    {

        return false;

    }

    return true;

}





function isWhitespaceMob (s) { 



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

 if ( isEmpty (s) ) return true;



   for ( var i = 1; i < s.length; i++ )  {

	   var c = s.charAt(i);   if ( whitespace.indexOf ( c ) == -1 ) return false; 

	   }

  return true;

}





function warnInvalid (field, s) {

 field.focus();

  alert(s);

  return false;

}



function checkEmpty (field) {

 if ( isEmpty( field.value ) || isWhitespace( field.value ) ) {

   return warnInvalid( field, alias + " must be entered." );

 }

   return true;

}

function checkLength( field, maxLength, alias)

{

  if(isEmpty(field.value) || isWhitespace(field.value)) return true;

  if ( field.value.length > maxLength )

    {

     return warnInvalid ( field, "The length of " + alias + " must not be over " + maxLength + " characters.");

    }

     return true;

}

function IsNumeric(strString)

   //  check for valid numeric strings	

   {

   var strValidChars = "0123456789.-";

   var strChar;

   var blnResult = true;



   //  test strString consists of valid characters listed above

   for (i = 0; i < strString.length && blnResult == true; i++)

      {

      strChar = strString.charAt(i);

      if (strValidChars.indexOf(strChar) == -1)

         {

         blnResult = false;

         }

      }

   return blnResult;

   }



function trimString (str) {

  while (str.charAt(0) == ' ')

    str = str.substring(1);

  while (str.charAt(str.length - 1) == ' ')

    str = str.substring(0, str.length - 1);

  return str;

}



function checkdropdown(list) {

    if (list.options[0].selected) {

		return false;

}

return true;

}