function FilterPhone(form, format) {

	var input = form.value;

	if(input.length > 0) { //do not perform if empty input

		var numbers = ""; //store all the numbers here

		//process to remove non-numbers and spaces
		for(var i = 0; i < input.length; i++) {
			var char = input.charAt(i);
			if(!(isNaN(char) || char == " ")) numbers += char;
		}

		//remove country code, if any
		if(numbers.substring(0, 2) == "47") numbers = numbers.substring(2, numbers.length);

		var output = ""; //assign numbers here

		//assign numbers to chosen format
		var n = 0, i = 0;
		while(i < format.length && n < numbers.length) {
			var char = format.charAt(i);
			if(char == "#") {
				output += numbers.charAt(n++)
			} else {
				output += char;
			}
			i++;
		}

		//give alert if length is less than 10.
		if(numbers.length < 10) {
			alert("The phone number must be of length 10.");
			form.select();
		}

		form.value = output; //output to form
	}
}

function FilterCityid(form, format) {

	var input = form.value;

	if(input.length > 0) { //do not perform if empty input

		var numbers = ""; //store all the numbers here

		//process to remove non-numbers and spaces
		for(var i = 0; i < input.length; i++) {
			var char = input.charAt(i);
			if(!(isNaN(char) || char == " ")) numbers += char;
		}

		//remove country code, if any
		if(numbers.substring(0, 2) == "47") numbers = numbers.substring(2, numbers.length);

		var output = ""; //assign numbers here

		//assign numbers to chosen format
		var n = 0, i = 0;
		while(i < format.length && n < numbers.length) {
			var char = format.charAt(i);
			if(char == "#") {
				output += numbers.charAt(n++)
			} else {
				output += char;
			}
			i++;
		}

		//give alert if length is less than 4.
		if(numbers.length < 4) {
			alert("The employee id number must be of length 4 or 5.");
			form.select();
		}

		form.value = output; //output to form
	}
}


function FilterSocial(form, format) {

	var input = form.value;

	if(input.length > 0) { //do not perform if empty input

		var numbers = ""; //store all the numbers here

		//process to remove non-numbers and spaces
		for(var i = 0; i < input.length; i++) {
			var char = input.charAt(i);
			if(!(isNaN(char) || char == " ")) numbers += char;
		}

		//remove country code, if any
		if(numbers.substring(0, 2) == "47") numbers = numbers.substring(2, numbers.length);

		var output = ""; //assign numbers here

		//assign numbers to chosen format
		var n = 0, i = 0;
		while(i < format.length && n < numbers.length) {
			var char = format.charAt(i);
			if(char == "#") {
				output += numbers.charAt(n++)
			} else {
				output += char;
			}
			i++;
		}

		//give alert if length is less than 9.
		if(numbers.length < 9) {
			alert("The social security number must be of length 9.");
			form.select();
		}

		form.value = output; //output to form
	}
}