//<SCRIPT LANGUAGE="JavaScript">
//<!-- JavaScript
//---------------------------------------------------------------------------------------------------------------------
//----------------------------------------Number Formatter by ProWebMasters.net----------------------------------------
//----------------------------------------  You are free to use this in your   ----------------------------------------
//----------------------------------------  scripts, but you must leave this   ----------------------------------------
//----------------------------------------   Copyright notice intact. Enjoy!   ----------------------------------------
//---------------------------------------------------------------------------------------------------------------------
//---------------------------------------- You can call this function with only----------------------------------------
//----------------------------------------   the 'num' object (reference your  ----------------------------------------
//----------------------------------------   field you want to format). If no  ----------------------------------------
//----------------------------------------formats are sent, it will use default----------------------------------------
//----------------------------------------             formats.                ----------------------------------------
//---------------------------------------------------------------------------------------------------------------------
function FormatNumber(num, format, shortformat)
{
	if(format==null)
	{
			// Choose the default format you prefer for the number. 
		//format = "#-(###) ###-#### ";		// Telephone w/ LD Prefix and Area Code
		format = "(###) ###-#### ";			// Telephone w/ Area Code
		//format = "###-###-####";			// Telephone w/ Area Code (dash seperated)
		//format = "###-##-####";			//Social Security Number
	}					
//---------------------------------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------------------------------
	if(shortformat==null)
	{
		// Choose the short format (without area code) you prefer. 
		//If you do not want multiple formats, leave it as "".

		//var shortformat = "###-#### ";
		var shortformat = "";
	}
	
//---------------------------------------------------------------------------------------------------------------------
//----------------------------------------This code can be used to format any number. ---------------------------------
//----------------------------------------Simply change the format to a number format ---------------------------------
//---------------------------------------- you prefer. It will ignore all characters  ---------------------------------
//----------------------------------------  except the #, where it will replace with  ---------------------------------
//----------------------------------------               user input.                  ---------------------------------
//---------------------------------------------------------------------------------------------------------------------

	var validchars = "0123456789";
	var tempstring = "";
	var returnstring = "";
	var extension = "";
	var tempstringpointer = 0;
	var returnstringpointer = 0;
	count = 0;

	// Get the length so we can go through and remove all non-numeric characters
	var length = num.value.length;
		

	// We are only concerned with the format of the phone number - extensions can be left alone.
	if (length > format.length)
	{
		length = format.length;
	};
	
	// scroll through what the user has typed
	for (var x=0; x<length; x++)
	{
		if (validchars.indexOf(num.value.charAt(x))!=-1)
		{
		tempstring = tempstring + num.value.charAt(x);
		};
	};
	// We should now have just the #'s - extract the extension if needed
	if (num.value.length > format.length)
	{
		length = format.length;
		extension = num.value.substr(format.length, (num.value.length-format.length));
	};
	
	// if we have fewer characters than our short format, we'll default to the short version.
	for (x=0; x<shortformat.length;x++)
	{
		if (shortformat.substr(x, 1)=="#")
		{
			count++;
		};
	}
	if (tempstring.length <= count)
	{
		format = shortformat;
	};

	
	//Loop through the format string and insert the numbers where we find a # sign
	for (x=0; x<format.length;x++)
	{
		if (tempstringpointer <= tempstring.length)
		{
			if (format.substr(x, 1)=="#")
			{
				returnstring = returnstring + tempstring.substr(tempstringpointer, 1);
				tempstringpointer++;
			}else{
				returnstring = returnstring + format.substr(x, 1);
			}
		}
		
	}

	// We have gone through the entire format, let's add the extension back on.
		returnstring = returnstring + extension;
	
	//we're done - let's return our value to the field.
	num.value = returnstring;
}	

// - JavaScript - -->
//	</SCRIPT>