var ap_name = navigator.appName;
		var ap_vinfo = navigator.appVersion;
		var ap_ver = parseFloat(ap_vinfo.substring(0,ap_vinfo.indexOf('(')));
		var time_start = new Date();
		var clock_start = time_start.getTime();
		var dl_ok=false;
		var i=10;
		function init ()
		{
			if(ap_name=="Netscape" && ap_ver>=3.0)
			dl_ok=true; 
			return true;
		}

		function get_time_spent ()
		{ 
			var time_now = new Date();
			return((time_now.getTime() - clock_start)/1000); 
		}
		function delaytime() 
		{
			if(i>=0)
			{
				var i_total_secs = Math.round(get_time_spent()); 
				var i_secs_spent = i_total_secs % 60;
				var i_mins_spent = Math.round((i_total_secs-30)/60); 
				var s_secs_spent = "" + ((i_secs_spent>9) ? i_secs_spent : "0" + i_secs_spent);
				var s_mins_spent ="" + ((i_mins_spent>9) ? i_mins_spent : "0" + i_mins_spent);
				if(s_secs_spent>=10)
				{
					document.getElementById("rulesubmit").disabled=false;	
					document.getElementById("rulesubmit").value = "ͬ Òâ";
					i--;
				}
				else
				{
					document.getElementById("rulesubmit").disabled=true;	
					document.getElementById("rulesubmit").value = "ͬÒâ("+i+")";
					i--;
				}
				window.setTimeout('delaytime()',1000); 
			}
			else
			{
				window.clearTimeout('delaytime()');
			}
			
		}