function backButtonOverride()
{
	// Work around a Safari bug
	// that sometimes produces a blank page
	setTimeout("backButtonOverrideBody()", 1);
	
}

	
function backButtonOverrideBody()
{
	// Works if we backed up to get here
	try {
		history.forward();
	} catch (e) {
		// OK to ignore
	}
	// Every quarter-second, try again. The only
	// guaranteed method for Opera, Firefox,
	// and Safari, which don't always call
	// onLoad but *do* resume any timers when
	// returning to a page
	setTimeout("backButtonOverrideBody()", 500);
}


function stopRKey(evt) { 
  var evt = (evt) ? evt : ((event) ? event : null); 
  var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null); 
  if ((evt.keyCode == 13) && (node.type=="text" || node.type=="password" || node.type=="checkbox"))
    {return false;} 
} 

document.onkeypress = stopRKey;