function antienter(event, field) {
	ch = event.keyCode || event.which;
	if(ch == 13)
		return(false);
	else
		return(true);
}
function entertab(event, field) {
	//document.all no longer specific to IE
	//however, document.all means we have keyCode (FireFox now returns true for ie4, and has a keyCode)
	//firefox cannot change the event.keyCode though, whereas IE can
	//var ns4=document.layers?1:0;var ie4=document.all?1:0;var ns6=document.getElementById&&!document.all?1:0;
	//if(ie4) ch = event.keyCode; else ch = event.which; 

	target = event.target || event.srcElement,
	ch = event.keyCode || event.which;
	useKeyCode = false;
	if(event.keyCode == undefined)
		;//alert('1 undefined');
	else
		useKeyCode = true;
		
	if(ch == 13) {
		if(useKeyCode) {
			//alert('changing keyCode to 9');
			try {
				event.keyCode = 9;	// FireFox stops here, JS error..., so does IE on FileUpload fields
			} catch (error) {
				// Ignore errors
			}
			//alert('changed2');
		} else {
			//alert('changing which to 9');
			event.which = 9;
		}
	}
	return(true);
}