function isNumber(sText) {
	var ValidChars = "0123456789.-";
	var IsNumber=true;
	var Char;

	for (i = 0; i < sText.length && IsNumber == true; i++) { 
		Char = sText.charAt(i); 
		if (ValidChars.indexOf(Char) == -1) {
			IsNumber = false;
		}
	}
	return IsNumber;
}
function checkForSpaces(textIn) {
	var allSpaces = true;
	for (var i=0;i<textIn.length;i++) {
		var nextChar = textIn.substr(i,1);
		if (nextChar != " ") {
			allSpaces = false;
		}
	}       
	return allSpaces;
}