html text input validators for Floating Point and Integers... BETA - threw together for quick-n-dirty job.

UI.validators.misc.js

// prevent non-floating points from being typed
// pressed key must either be a number,
// or a decimal point (only if one has not already been typed)
// or a negative sign (only we are at the start of the input)
// USAGE:
//      <input type="text" onkeypress="return isFloatingPoint(event);" />
function isFloatingPoint(evt)
{
	var nochars = evt.currentTarget.value.trim().length == 0;
	var alreadyHasDecimal = evt.currentTarget.value.indexOf(".") >= 0;

	var charCode = (evt.which) ? evt.which : event.keyCode

	if (charCode == 45 && nochars)
		return true;
	else if (charCode == 45 && !nochars)
		return false;
	if (charCode == 46 && !alreadyHasDecimal)
		return true;
	else if (charCode == 46 && alreadyHasDecimal)
		return false;
	else if (charCode > 31 && (charCode < 48 || charCode > 57))
		return false;
	else
		return true;
} // isFloatingPoint validator

// prevent non-integer points from being typed
// pressed key must either be a number
// or a negative sign (only we are at the start of the input)
// USAGE:
//      <input type="text" onkeypress="return isInteger(event);" />
function isInteger(evt) {
	var nochars = evt.currentTarget.value.trim().length == 0;

	if (!nochars && evt.currentTarget.selectionStart !== undefined) {
		// standards-compliant version
		var startPos = evt.currentTarget.selectionStart;
		var endPos = evt.currentTarget.selectionEnd;
		if (startPos == 0 && endPos == 0) {
			nochars = true;
		} else if (evt.currentTarget.value.substring(0, 1) != "-") {
			nochars = true;
		}
	}

	var charCode = (evt.which) ? evt.which : event.keyCode

	if (charCode == 45 && nochars)
		return true;
	else if (charCode == 45 && !nochars)
		return false;
	else if (charCode > 31 && (charCode < 48 || charCode > 57))
		return false;
	else
		return true;
} // isInteger validator