// -------------------------------------------------------------------

	netscape = "";
	ver = navigator.appVersion; len = ver.length;
	for(iln = 0; iln < len; iln++) if (ver.charAt(iln) == "(") break;
	netscape = (ver.charAt(iln+1).toUpperCase() != "C");
	// -------------------------------------------------------------------
	function keyDown(DnEvents) 
		{ // handles keypress
				// determines whether Netscape or Internet Explorer
				k = (netscape) ? DnEvents.which : window.event.keyCode;

				nf = new Object;				
				if (k==09) // tab key pressed
				{ }
					
				//t = new Object;
				if (k == 13) 
				{ // enter key pressed
				  //alert( document.activeElement.id );				  
				  var  x = document.activeElement.id;
				  //alert (x);
				  x++ ;				  
				  //alert(document.forms[0].elements.length);
				  if ( x == document.forms[0].elements.length )
				  	 x=0;
				  eval('document.forms[0].elements['+ x +' ].focus()');
				  eval('document.forms[0].elements['+ x +' ].select()');
					return false;
				}
	

	   }	
	   	
    nextfield = '1';
	document.onkeydown = keyDown; // work together to analyze keystrokes
	if (netscape) document.captureEvents(Event.KEYDOWN|Event.KEYUP);

	// -------------------------------------------------------------------
	//							isNum
	// -------------------------------------------------------------------
	function isNum(curObj) 
	{
		var argvalue = new Object;
		argvalue = curObj.value;
		argvalue.toString();

		if (argvalue.length == 0)
			{ curObj.value=0;
				return false;
			}	
		decimalcount = 0
	
		for (var n = 0; n < argvalue.length; n++)
		{
			if (argvalue.substring(n, n+1) < "0" || argvalue.substring(n, n+1) > "9" )	
			{
			if (argvalue.substring(n, n+1) == "." && ++decimalcount < 2 ) 
					{ }
					else
					{	
						alert("Please enter a valid number.");
						curObj.select();
						curObj.focus();
						return false;
						}
			}
		}
		return true;
	}
	// -------------------------------------------------------------------
	//							submitpage
	// -------------------------------------------------------------------
	function submitpage()
	{
		document.forms[0].submit();
		return true;
	
	}