var w3c=(document.getElementById)?true:false;
var ns4=(document.layers)?true:false;
var ie4=(document.all && !w3c)?true:false;
var ie5=(document.all && w3c)?true:false;
var ns6=(w3c && navigator.appName.indexOf("Netscape")>=0)?true:false;
var saf=(w3c && navigator.appName.indexOf("Safari")>=0)?true:false;
var firefox=(w3c && navigator.appName.indexOf("Firefox")>=0)?true:false;

function keyDown(e) {

        if (ns4) {var nKey=e.which; var ieKey=0}
        if (ns6) {var nKey=e.which; var ieKey=0}
        if (firefox) {var nKey=e.which; var ieKey=0}
        if (ie4) {var ieKey=event.keyCode; var nKey=0}
        if (ie5) {var ieKey=event.keyCode; var nKey=0}
	if (saf) {var ieKey=event.keyCode; var nKey=0}
        if (ieKey == 13){SubmitForm();}
	if (nKey == 13){SubmitForm();}


}

document.onkeydown = keyDown
if (ns4) document.captureEvents(Event.KEYDOWN)