var isIE = document.all?true:false;
var isNS = document.layers?true:false;

function onlyDigits(e,decReq) {
	var key = (isIE) ? window.event.keyCode : e.which;

	if (key > 31 && (key < 48 || key > 57))
	{
		if (isIE)
		{
			window.event.keyCode = 0;
		}
		return false;
	}
	return true;
}