function alphabetOnly(e)
	{
		var key;
		var tf;
		if(window.event) // IE
			key = e.keyCode;
		else if (e.which) // Netscape/Firefox/Opera
			key = e.which;
//		alert("key: " + key + "; keycode: " + e.keyCode);
		if (((key > 64 && key < 91) || (key > 96 && key < 123)) || (key == 8) || (key == 32) || (e.keyCode == 9) || (e.keyCode > 34 && e.keyCode < 41) || (e.keyCode == 46))
			return true;
		else
			return false;
	}
	
	function numOnly(e)
	{
		var key;
		var tf;
		if(window.event) // IE
			key = e.keyCode;
		else if(e.which) // Netscape/Firefox/Opera
			key = e.which;
//		alert("key: " + key + "; keycode: " + e.keyCode);
		if ((key > 47 && key < 58) || (key == 8) || (e.keyCode == 9) || (e.keyCode == 37) || (e.keyCode == 39) || (e.keyCode == 46))
			return true;
		else
			return false;
	}