var st = new SortableTable(document.getElementById("table"), ["String", "sequencePosition","Number", "String", "Number"], document.getElementById("filter_form"));

var nav = window.Event ? true : false;

if (nav) {
	window.captureEvents(Event.KEYDOWN);
	window.onkeydown = NetscapeEventHandler_KeyDown;
	}
else {
	document.onkeydown = MicrosoftEventHandler_KeyDown;
}

function NetscapeEventHandler_KeyDown(e) {
  if (e.which == 13 && e.target.type != 'textarea' && e.target.type != 'submit') {
	  alert("NSF");
	  return false;
	  }
	  //alert("NST");
	  return true;
}

function MicrosoftEventHandler_KeyDown() {
	if (event.keyCode == 13 && event.srcElement.type != 'textarea' && event.srcElement.type != 'submit') {
		return false;
	}
	return true;
}