function entsubmitted() {
	  if (window.event && window.event.keyCode == 13)
	  { backPressed=false;
	    return false;
	    }
	  else
	    return true;
	}
if (typeof window.event != 'undefined')
	document.onkeydown = function()
	{
		if (event.srcElement.tagName.toUpperCase() != 'INPUT')
			return (event.keyCode != 8);
	}
else
	document.onkeypress = function(e)
	{
		if (e.target.nodeName.toUpperCase() != 'INPUT')
			return (e.keyCode != 8);
	}