var isNav, isIE 
if (parseInt(navigator.appVersion) >= 4) 
{
	if (navigator.appName == "Netscape")
	{
		isNav = true 
	}
      if (navigator.appName == "Microsoft Internet Explorer")
	{
		isIE = true 
	}
} 

function showKeyValue(evt, former) 
{ 
	var keyValue 
	if (isNav) 
	{
		keyValue = evt.which 
	}
	if (isIE) 
	{
		keyValue = window.event.keyCode 
	}

	if (keyValue == 13) 
	{
		if(former == 1)
			document.login.submit()

		if(former == 2)
			document.loginForm.submit()

		if(former == 3)
			validate()
	} 
	//return false;
}