var Diff_JH = -1; var Diff_JM = -1; var Diff_JS = -1;
var Diff_SH = -1; var Diff_SM = -1; var Diff_SS = -1;
var JDay = new Date(2010,07,10,0,0,0) ; JDay.setMonth(JDay.getMonth()-1);
var SDay = new Date(2010,07,01,0,0,0) ; SDay.setMonth(SDay.getMonth()-1);
var daysms = 24 * 60 * 60 * 1000; var hoursms = 60 * 60 * 1000; var Secondms = 60 * 1000; var microsecond = 1000;

function CountDown() {
	var time = new Date(); var hour = time.getHours(); var minute = time.getMinutes(); var second = time.getSeconds();
	var timevalue = ""+((hour > 12) ? hour-12:hour);
	timevalue +=((minute < 10) ? ":0":":")+minute; timevalue +=((second < 10) ? ":0":":")+second; timevalue +=((hour >12 ) ? " PM":" AM");
	
	// 國中二次基測部份
	var Conv_JH = Diff_JH; var Conv_JM = Diff_JM; var Conv_JS = Diff_JS;
	var Diffms = JDay.getTime() - time.getTime();
	Diff_JH = Math.floor(Diffms / daysms);  Diffms -= Diff_JH * daysms;
	Diff_JM = Math.floor(Diffms / hoursms);  Diffms -= Diff_JM * hoursms;
	Diff_JS = Math.floor(Diffms / Secondms);  Diffms -= Diff_JS * Secondms;
	var dSecs = Math.floor(Diffms / microsecond);
	if(Conv_JH != Diff_JH) { document.getElementById('JD').innerHTML = Diff_JH; }
	if(Conv_JM != Diff_JM) { document.getElementById('JH').innerHTML = Diff_JM; }
	if(Conv_JS != Diff_JS) { document.getElementById('JM').innerHTML = Diff_JS; }
	document.getElementById('JS').innerHTML=dSecs;
	
	// 高中指考部份
	//var Conv_SH = Diff_SH; var Conv_SM = Diff_SM; var Conv_SS = Diff_SS;
	//var Diffms = SDay.getTime() - time.getTime();
	//Diff_SH = Math.floor(Diffms / daysms);  Diffms -= Diff_SH * daysms;
	//Diff_SM = Math.floor(Diffms / hoursms);  Diffms -= Diff_SM * hoursms;
	//Diff_SS = Math.floor(Diffms / Secondms);  Diffms -= Diff_SS * Secondms;
	//var dSecs = Math.floor(Diffms / microsecond);
	//if(Conv_SH != Diff_SH) { document.getElementById('SD').innerHTML = Diff_SH; }
	//if(Conv_SM != Diff_SM) { document.getElementById('SH').innerHTML = Diff_SM; }
	//if(Conv_SS != Diff_SS) { document.getElementById('SM').innerHTML = Diff_SS; }
	//document.getElementById('SS').innerHTML=dSecs;
	
	setTimeout('CountDown()',1000);
}