//驗證表單，包括長度驗證
//調用方法如下
//<input name="BTNSUBMIT" type="submit" class="BTNSUBMITCSS" id="BTNSUBMIT" style="font-size:13px;border:thin solid #FFCC00;background-color:#FFCC00;" onclick="MM_validateForm('TXTNAME','','R','TXTIDCARD','15:18','RisNumLength','TXTZIP','6:6','RisNumLength','TXTADDRESS','','R');return document.MM_returnValue" value="提 交">
function trans_name(id)
{
	if(id=="TXTNAME")
		return "姓名";
	else if(id=="TXTIDCARD")
		return "身份證號";
        else if (id=="TXTZIP")
          return "郵編";
        else if (id=="TXTADDRESS")
          return "通信地址";
	else
		return id;
}

function MM_findObj(n, d) { //v4.01
  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 && d.getElementById) x=d.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,cond,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { 
		test=args[i+2];
		cond=args[i+1]; 
		val=MM_findObj(args[i]);
    if (val) { 
			nm=val.name; 
			if ((val=val.value)!="") {
      	if (test.indexOf('isEmail')!=-1) { 
					p=val.indexOf('@');
        	if (p<1 || p==(val.length-1)) 
						errors+='- '+trans_name(nm)+' 請輸入有效的電子郵件地址。\n';
      	}
				else if (test.indexOf('Length')!=-1 ){
					num=val.length;
					p=cond.indexOf(':');
					min=cond.substring(0,p);
					max=cond.substring(p+1);
          if (num<min || max<num) 
						if(min==max)
							errors+='- '+trans_name(nm)+' 長度必須是 '+min+'。\n';
						else
							errors+='- '+trans_name(nm)+' 長度必須大于 '+min+' ，小于 '+max+'。\n';
				}
				else if (test!='R') { 
					num = parseFloat(val);
        	if (isNaN(val)) 
						errors+='- '+trans_name(nm)+' 只能包含數字。\n';
        	if (test.indexOf('inRange') != -1) { 
						p=test.indexOf(':');
          	min=test.substring(8,p); 
						max=test.substring(p+1);
          	if (num<min || max<num) 
							errors+='- '+trans_name(nm)+' 只能包含介于 '+min+'和 '+max+'之間的數字\n';
    			}
				}
			}
			else if (test.charAt(0) == 'R') 
				errors += '- '+trans_name(nm)+' 不能為空。\n'; 
		}
  }
	if (errors) 
		alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}