function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function resize_scr(w,h) {
	window.moveTo(0,0);
	if (screen.height < h)	h = screen.height;
	if (screen.width < w) w = screen.width;
	window.resizeTo(w,h);
}

function check_sub(inputform) {
  	var ok = true;
   	var a1 = inputform.q1[0].checked;
   	var b1 = inputform.q1[1].checked;
   	var c1 = inputform.q1[2].checked;	
	if ((ok != false) && (!(a1 || b1 || c1))) {alert ("請回答問題 1"); ok = false;}
	var a2 = inputform.q2[0].checked;
   	var b2 = inputform.q2[1].checked;
   	var c2 = inputform.q2[2].checked;	
	if ((ok != false) && (!(a2 || b2 || c2))) {alert ("請回答問題 2"); ok = false;}
	var a3 = inputform.q3[0].checked;
   	var b3 = inputform.q3[1].checked;
   	var c3 = inputform.q3[2].checked;	
	if ((ok != false) && (!(a3 || b3 || c3))) {alert ("請回答問題 3"); ok = false;}	  
  	var d = inputform.email.value;
	if ((ok != false) && (d.length == 0)) {alert ("請輸入電郵地址!"); ok = false;}
	if ((ok != false) && (d.length > 0) && (emailCheck(d) == false)) {ok = false;}
	if (ok != false) {
		inputform.answer.value = 'WRONG';
		switch (inputform.i.value) {
			case "1":
				if (c1 && b2 && b3) {inputform.answer.value = 'CORRECT';}	  
  				break;
			case "2":
				if (b1 && b2 && a3) {inputform.answer.value = 'CORRECT';}	  
  				break;
			case "3":
				if (b1 && c2 && c3) {inputform.answer.value = 'CORRECT';}	  
  				break;
			case "4":
				if (c1 && b2 && c3) {inputform.answer.value = 'CORRECT';}	  
  				break;
			case "5":
				if (c1 && b2 && a3) {inputform.answer.value = 'CORRECT';}	  
  				break;
			}
	}
  	var d = inputform.answer.value;
	if ((ok != false) && (d.length == 0)) {alert ("資料傳送未能完成! 請再嘗試!"); ok = false; window.close(self);}	
	if (ok == true) {inputform.submit();} else {return false;}
}

function ltrim(obj) {
	while(''+obj.value.charAt(0)==' ') {
		obj.value=obj.value.substring(1,obj.value.length);
	}
}

function rtrim(obj) {
	while(''+obj.value.charAt(obj.value.length-1)==' ') {
		obj.value=obj.value.substring(0,obj.value.length-1);
	}
}

function trim(obj) {
	while(''+obj.value.charAt(obj.value.length-1)==' ') {
		obj.value=obj.value.substring(0,obj.value.length-1);
	}
	while(''+obj.value.charAt(0)==' ') {
		obj.value=obj.value.substring(1,obj.value.length);
	}
}