var validchar=" abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
var validcharnum=" abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
var validuserchar="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890&/()-";
var validtnchar=" ()-.0123456789/";
var onlynumbers="0123456789";
var validzipchar="0123456789-/";
var validloginchar="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890@._";


/*******************************************************
 * Validate the Member Search text box 
 *******************************************************/
function doSearchValidation() 
	{   	
		var frm = self.document.formMbrSearch;
		 
		if (ChkForCharsNumericsOnly(frm.name_search.value, 1) == false) 
		{
			alert("Only alphas or numerics are allowed.");			
			return false;
		}  		
	   return true;
	}			
	

/*******************************************************
 * Edits the string for characters only and a the minimum length required 
 *******************************************************/
function ChkForAllChars(string, minstrlen)
{ 
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (validchar.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}


/*******************************************************
 * Edits the string for characters and numerics only and a the minimum length required 
 *******************************************************/
function ChkForCharsNumericsOnly(string, minstrlen)
{ 
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (validcharnum.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}


/*******************************************************
 * Edits the string for characters plus add chars and a the minimum length required 
 *******************************************************/
function ChkForCharsPlus(string, minstrlen)
{ 
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (validuserchar.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}


/*******************************************************
 * Edits the string for characters plus add chars and a the minimum length required 
 *******************************************************/
function ChkForCharsLogin(string, minstrlen)
{ 
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (validloginchar.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}

/*******************************************************
 * Edits the string for characters only and a the minimum length required 
 *******************************************************/
function ChkForNumerics(string, minstrlen)
{ 
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (onlynumbers.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}
/*******************************************************
 * Edits the string for characters only and a the minimum length required 
 *******************************************************/
function ChkForValidUserChars(string, minstrlen)
{ 
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (validuserchar.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}

/*******************************************************
 * Edits the string for valid Email address
 * Must be in the proper format as well
 *******************************************************/
function ChkForValidEmail(string)
{
	if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) == -1)
		return false;
}

/*******************************************************
 * Edits the string for valid Postal code
 * Must be in the proper format as well
 *******************************************************/
function ChkForPostalCode(string)
{
	if ((string.search(/^[0-9A-Za-z]+((-)[0-9A-Za-z]+)*$/) == -1) || (string.length < 4))
		return false;
}

/*******************************************************
 * Edits the string for valid Telephone number
 *******************************************************/
function ChkForValidTN(string, minstrlen)
{
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (validtnchar.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}


/*******************************************************
 * Edits the string for valid Telephone number
 *******************************************************/
function ChkForValidZIP(string, minstrlen)
{
	if (string.length < minstrlen)
		return false;
	for (var i=0; i<string.length; i++)
	{
	    if (validzipchar.indexOf(string.charAt(i)) < 0)
			return false;
	}
	return true;           
}

/*******************************************************
 * Do some Validation checks on the credit card
 *******************************************************/
function ChkForValidCC(string, cctype)
{
	var bRet = true;

	switch (cctype)
	{
		case "A":
		{
		   if (string.length != 15)
			{
				bRet = false;
				break;
			}		
			if ((ChkForNumerics(string,15)) == false)
				bRet = false;
			if ((string.search(/^([34]|[37])([0-9])+$/) == -1))
				bRet = false;
			break;
		}
		case "D":
		{
			if ((ChkForNumerics(string,16)) == false)
				bRet = false;
			if ((string.search(/^[6][0][1][1]([0-9])+$/) == -1))
				bRet = false;
			break;
		}
		case "M":
		{
			if ((ChkForNumerics(string,16)) == false)
				bRet = false;
			if ((string.search(/^[5][1-5]([0-9])+$/) == -1))
				bRet = false;
			break;
		}
		case "V":
		{
		   if ((string.length != 13) && (string.length != 16))
			{
				bRet = false;
				break;
			}
			if ((ChkForNumerics(string,13)) == false)
				bRet = false;
			if ((string.search(/^[4]([0-9])+$/) == -1))
				bRet = false;
			break;
		}

	}
	
	if (bRet == true)
		bRet = PerformMod10CCCheck(string);
	
	return bRet;
}

/*******************************************************
 * Perform the mod10 check sum routine on the 
 *  digits in the card number
 *    1) Go through the Credit Card Number digits, starting on 
 *        the RIGHT.
 *            If the position is odd
 *                 add the digit to the checksum tally. 
 *            If the position is even
 *                 multiply the digit by 2
 *                 if the result is greater than 9
 *                     divide the result by 10 
 *                     and add the remainder 
 *                         to the checksum tally
 *                     add 1 to the checksum tally
 *                 if the result is 9 or less
 *                     add the result to the checksum tally
 *        Repeat for each digit.
 *    2) Divide the checksum tally by 10
 *    3) If there is a remainder
 *                     the Credit Card Number is not valid.

 *******************************************************/
function PerformMod10CCCheck(string)
{
	var iChkSum = 0;
	var validCard = true;
	
// ----------------------------------------------------
// for loop to look at the Credit Card Number
// ----------------------------------------------------
	for (var x=1;x <= string.length; x++)
	{
		var currentDigit = string.charAt(string.length-x);
		// ---------------------------------------------
		// even position in credit card number 
		// (2nd, 4th, etc. from RIGHT of Credit Card #)
		// ----------------------------------------------
		if (x % 2 == 0)
		{
			var workDigit = currentDigit * 2;
			if (workDigit > 9)
			{
				iChkSum = iChkSum + (1-0);
				iChkSum = iChkSum + (workDigit % 10);
			}
			else
			{
				iChkSum = iChkSum + (workDigit - 0)
			}
		}
		// ----------------------------------------------
		// odd position in credit card number 
		// (1st, 3rd, etc. from RIGHT of Credit Card #)
		// ----------------------------------------------
		else
		{
			iChkSum = iChkSum + (currentDigit - 0);
		}
	}  //end for llop
		
	if (iChkSum % 10)
	{
		validCard = false;
	}
	return(validCard);
}


/*******************************************************
 * Remove possibly malicious chars
 *******************************************************/
function RemoveBadChars(sTemp) 
{ 
    sTemp = sTemp.replace(/\<|\>|\"|\'|\%|\;|\(|\)|\&|\+|\-/g,""); 
    return sTemp;
}