function CheckEmail(sValue, sField)
	{
	// checks field for a @ and .
	// fails if both are not found
	
	var sChar;
	var bFindAt = false;
	var bFindPeriod = false;
	
	for(i=0;i < sValue.length && (bFindPeriod == false || bFindAt == false);i++)
	{
		if(sValue.charAt(i)=='@')
		{
			bFindAt = true
		}
		
		if(sValue.charAt(i)=='.')
		{
			bFindPeriod = true;
		}
		
	}

	if(bFindAt!=true || bFindPeriod != true)
	{
		alert('The ' + sField + ' field must contain a valid email address.');
		return false;	
	}
	else
	{
		return true;
	}

}
	
	function SocialSinCheck(sSocial)
	{
		
		/*** check for numbers or - only!**/
		var sTest = "-1234567890";
		var bMatch = false;
		var bFail = false;
		if (sSocial.length != 11 )
		{
			return false;
		
		}
		
		for (i = 0;i <= (sSocial.length - 1) && bFail == false; i++)
		{
			bMatch = false;
			
			for (z = 0; z <= (sTest.length - 1) && bMatch == false; z++)
			{
/**alert(sSocial.charAt(i) + '  ' + sTest.charAt(z) + (sSocial.charAt(i) == sTest.charAt(z)));
**/				if (sSocial.charAt(i) == sTest.charAt(z))
				{
					
					bMatch = true;
				}
							
			}							
		
			if (bMatch == false)
			{
			
				bFail = true;
			}
			else
			{
				bFail = false;
			}
			
		}

		if (bFail == true)
		{
			return false;
		}
		
		/*** check for format nnn-nn-nnnn***/
		
		if (sSocial.charAt(3) != '-' || sSocial.charAt(6) != '-' )
		{
			bFail = true;
		}
		
		/** check for Canadian Format nnn-nnn-nnn**/
		if (bFail == true)
		{
			if (sSocial.charAt(3) == '-' && sSocial.charAt(7) == '-' )
			{
				bFail = false;
			}
		
		}
		
		if (bFail == true)
		{
			return false;
		}
		
		return true;		
				
	}
	
	function VerifyIncluded(sTest,sMatches)
	{
		var bMatch;
		
		for (var i = 0; i < sTest.length ; i++)
		{
			bMatch = false;
		
			for (var z = 0; (z < sMatches.length ) && (bMatch == false); z++)
			{
				
				if(sTest.charAt(i) == sMatches.charAt(z))
				{
					bMatch = true;
				}				
							
			}
			
			if (bMatch == false)
			{
				return false;
			}	
							
		}
	
		return true;
			
	}
	function stripNonDigits(str) {
	var i
	var newstring = ""
	for (i = 0;  i < str.length; i++) {
		mychar = str.charAt(i)
		if (isDigits(mychar)) 
			newstring += mychar
	}
	return newstring
}

function stripChars(str, chars) {
	var i
	var newstring = ""
	for (i = 0;  i < str.length; i++) {
		mychar = str.charAt(i)
		if (chars.indexOf(mychar) == -1)
			newstring += mychar
	}
	return newstring
}

function isDigits(str) {
	var i
	for (i = 0; i < str.length; i++) {
		mychar = str.charAt(i)
		if (mychar < "0" || mychar > "9")
			return false
	}
	return true
}

function isNumber(str) {
	numdecs = 0
	for (i = 0; i < str.length; i++) {
		mychar = str.charAt(i)
		if ((mychar >= "0" && mychar <= "9") || mychar 
			== ".") {
			if (mychar == ".")
				numdecs++
		}
		else 
			return false
	}
	if (numdecs > 1)
		return false	
return true
}

function isInRange(str, num1, num2) {
	var i = parseInt(str)
	return((i >= num1) && (i <= num2))

}

function trim(myform,field)
{
   value = document.forms[myform].elements[field].value;

  while (value.charAt(value.length-1) == " "){value = value.substring(0,value.length-1);} 
  while(value.substring(0,1) ==" "){value = value.substring(1,value.length);}

  document.forms[myform].elements[field].value = value;
  //Leave the next line only when you want to select the textbox after you have clicked the button.
}